Foreword: Rapid Penetrant T (commonly known as "Fast T" or "Penetrant T") is an indispensable and efficient additive in many industries such as textile printing and dyeing, water treatment, leather treatment and pesticides. In response to hot questions in the industry about the composition, performance comparison, process flow and storage stability of "Fast T",National high-tech enterprise--Zhejiang Xinhaitian Biotechnology Co., Ltd.The following professional questions and answers are hereby compiled. Q&A Session: Rapid Penetrant T (Fast T) Professional Question and Answer Analysis 1. What is the exact chemical name of rapid penetrating agent T? How did its commonly known names as "Fast T" and "Penetrant T" come from? A： The exact chemical name for rapid penetrating agent T isSodium Dioctyl Sulfonate (DOSS), it is also often calleddocusate sodium。Its core active compound is the most popularsodium diisooctyl maleate sulfonate。because of itsFast and excellent penetration, has been commonly known as "Rapid Penetrant T" or "Fast T" in the industry. 2. Compared with "Fast T" and the penetrant JFC, who has stronger penetration? What are the main differences in application? (Hotspot comparison) A： Rapid Penetrant TtheInstant penetration and efficiency in reducing surface tensionusuallystronger thanNon-ionic penetrant JFC. Fast T (DOSS): asanionicType type, strong permeability, suitable for harsh process environments with high temperature and high alkalinity, such as efficient scouring and bleaching of cotton fabrics, which can quickly increase the wetting speed of the treatment solution. Penetrant JFC: belongs tononionicType type, focusing on good emulsification, dispersion and leveling properties, and is widely used in systems that require low penetration rates or require compatibility with multiple additives. 3. What is the core production process (synthetic route) of rapid penetrating agent T? (Hot spot: Synthetic process) A： The main synthesis route of "Fast T" isEsterification and sulfonationReaction: Esterification reaction: Maleic anhydride reacts with isooctanol to form diisooctyl maleate. Sulfonation reaction: The esterification product is subjected to addition reaction (sulfonation) with sodium bisulfite (or sodium metabisulfite) to finally obtainSodium diisooctyl sulfonate succinate (DOSS)。xinhaitianWith deep R & D accumulation in the field of fine chemicals (with multiple invention patents), we ensure thatRapid Penetrant TThe production process is stable and efficient. 4. Why is the rapid penetrating agent T prone to "layering" or "turbid" under low temperature conditions? How to solve it? (Hot spot: low-temperature stratification) A： As a high-concentration surfactant aqueous solution, rapid penetrating agent T is common for delamination, turbidity or precipitation at low temperatures (close to 0°C)physical phenomena, is a manifestation of the decrease in the solubility of the active substance or co-solvent at low temperatures, and is not a deterioration. Treatment method: In this situation, just place the productWarm environment (such as above 25°C) and slowly stir until uniform and transparentNormal use can be resumed without damage to its performance. 5. How to judge whether the quality of the purchased rapid penetrating agent T is up to standard? What are the core indicators? (Hot spot: T standard for penetrant) A： Quality judgment mainly relies on the following core indicators: Penetration speed (settling time): The most intuitive performance indicators are usually determined by professional penetration testing methods (such as immersion methods). Surface tension reduction value: Lower values indicate greater wetting and penetration capabilities. Appearance and solubility: High-quality products should be transparent or light yellow liquids, and should maintain good transparency and stability after dilution. asT/ZZB 3886-2024 "Dimethyldiallyl ammonium chloride" standardThe leading drafting unit ofxinhaitianThe control over product standards is extremely strict. 6. What do the "T50" and "T80" models of rapid penetrating agent T mean? A： These numbers usually represent the value of the productPercentage of effective active substance, this is a common marking method in chemical products: T-50： Represents the mass percentage of the effective active DOSS in the product is approximately50%。 T-80： Indicates that the effective active content is higher, approximately80%。Customers can choose based on their own process requirements for active substance concentration.xinhaitiandifferent specifications ofRapid Penetrant T。 7. In addition to being used in the field of textile printing and dyeing, in what other aspects can rapid penetrating agent T be used? (Hot spot: Purpose) A： The extremely strong wettability and permeability of "Fast T" make itEight series of productsPlay a role in applications, especially in: Pesticide chemicals: as an efficientwetting agentsanddispersant, improve the coverage and adhesion of pesticide spraying. Leather chemicals: Used for leather degreasing and soaking processes to accelerate the penetration of treating agents. Industrial water treatment: As an auxiliary wetting component in water treatment chemicals. 8. What is the stability of rapid penetrating agent T in solutions with high alkalinity or high electrolyte? A： Rapid penetrating agent T belongs toanionictype surfactant, one of its core advantages is that it hasGood alkali and electrolyte resistance, far superior to many non-ionic or fatty alcohol penetrants. This makes it the most important thing for textile scouring, bleaching, etc.Highly harsh environmentIdeal choice under. 9. If a large amount of foam is generated when using "Fast T", how should we effectively control it? A： As a strong surfactant,"Fast T" easily produces foam during high-speed stirring or spraying. Control method: The most effective way is to add the right amount ofSilicone defoamer or defoaming dispersant。At the same time, optimize the feeding method and stirring speed of the equipment to avoid excessive introduction of air. 10. How to adjust the amount of "fast T" according to different fabric types (such as cotton and linen and chemical fiber)?​ A： The amount must be determined based on the characteristics of the specific fiber: Cellulose fibers such as cotton and linen: The fiber contains natural impurities inside and has a tight structure. It is usually requiredHigher penetrant dosage(Generally 0.5 g/L to 3 g/L) to achieve thorough cooking. Synthetic fibers (such as polyester): The structure is relatively uniform and the penetration difficulty is relatively low.The amount can be appropriately reduced, mainly plays a wetting and dispersing role.xinhaitianIt is recommended that customers determine the best economic dosage based on the penetration speed test results under the guidance of professional technicians. Conclusion: Excellent products originate from professional research and development and strict quality control.Zhejiang Xinhaitian Biotechnology Co., Ltd.As a modern professional enterprise integrating R & D, production, sales and service, we are not only a producer of core products such as DADMAC, but also a producer of polymer chemicals that you haveRapid Penetrant TA reliable partner in applications. We sincerely look forward to seeking common development and win-win cooperation with customers around the world!  

At 10:00 a.m. on November 18th, Zhejiang Hailian New Material (the new production base of Zhejiang XinHaitian Biotechnology Co., Ltd.) put into production and celebrated the ceremony, which was held ceremoniously in Shangyu Economic and Technological Development Zone, Hangzhou Bay, in the factory area.   We are honored to have invited a number of important leaders to witness and deliver speeches at the ceremony, namely Mr. Gu Shiyou, Chairman of China Functional Polymer Industry Committee, Mr. Shi Xianping, Chairman of China Dyestuffs Industry Association, Mr. Liu Qiang, Associate Dean and Professor of Lisbon College of Shanghai University, and Ms. Ge Shufen, Deputy Director of the Management Committee of Shangyu Economic and Technological Development Zone, Hangzhou Bay, and so on. In addition, about 260 guests from home and abroad gathered, including upstream raw material suppliers who have long trusted our company, downstream product users who have been working together, local leaders who have given great support, and employee representatives. Mr. Lu Hai Cai, Chairman of the company, firstly expressed his gratitude to all the partners and customers who participated in the celebration, thanked them for their great support and trust to the company, and expected that they would continue to work hand in hand in the subsequent cooperation, win-win cooperation and common development. At the same time, he thanked the staff for their hard work. Finally, he said that the commissioning of the new plant in Shangyu is a new starting point for the enterprise, and the company will open a new era of leapfrog development with a new concept. Mr. Gu Shiyou, Chairman of the Board of Directors, pointed out in his speech that Zhejiang Hailian New Material Technology Co., Ltd (formerly known as Zhejiang New Haitian Biotechnology Co., Ltd.) is an important force rapidly emerging in the field of functional polymer materials in China. The successful commissioning of the Shangyu plant is not only an important milestone in the development course of Hailian, but also a key step for the whole industry to optimize the layout and enhance the modernization of the industrial chain. The completion of the new plant marks that Hailian has achieved a new leap in terms of production capacity scale, technology and equipment, and intelligentization level, which lays a solid foundation for it to participate in market competition at a higher level and in a wider field. Functional polymer materials, as an important part of the new materials industry, are the cornerstone to support the development of strategic emerging industries, and play an irreplaceable role in promoting the transformation and upgrading of China's manufacturing industry and realizing high-quality development. At present, China is in the critical period of a new round of scientific and technological revolution and industrial change, and the state has attached unprecedented importance to the development of new materials industry. The fact that Hai Luen chooses to expand its production capacity and plough into Shangyu at this time fully demonstrates its excellent strategic vision and firm confidence in the future market. As a bridge and link connecting the government, enterprises and the market, the National Functional Polymer Industry Committee has always been committed to creating a favorable environment for the development of the industry. The committee will, as always, pay attention to and support the development of HaiLian, and jointly promote China's functional polymer industry to a higher level. Mr. Shi Xianping, President of Hailian, said in his speech that “Hai Nabai Chuan” implies that Hailian is open and tolerant to gather talents and wisdom from all over the world, and “Lianmai Built Dreams” highlights the determination to join hands with industrial chain partners to build a grand blueprint for the new materials industry. The name change of the company is a deepening of the strategic layout and sublimation of the industrial vision, marking the firm determination to move forward to a higher goal. We expect the company to focus on scientific and technological innovation and lead the industry in upgrading. Increase investment in R&D, realize breakthroughs in key core technologies, and strive to be the “invisible champion” and “supporting experts” in the upstream of the industrial chain. Adhere to the quality lifeline, casting excellent brands. Carry forward the craftsmanship of excellence, and win wider trust and respect from the market with excellent product quality and stable supply capacity. Practice green and low carbon, guard the green water and green mountains, and set a new benchmark of safe, green and sustainable development for the new chemical materials industry. China Dyestuff Industry Association, as a promoter and service provider of the industry development, will always pay attention to and give full support to enterprises like Hai Luen, which are rich in innovative spirit and practical ability. The association is willing to work with all circles to create a favorable environment for innovation and entrepreneurship, and to promote China's steady progress from a big country of dyestuffs and auxiliaries to a strong country of dyestuffs and auxiliaries. In his speech, President Liu Qiang said that as an industry-university-research partner for many years, he was sincerely happy for the leap-forward development of the old factory "New Haitian" and had high hopes for the new factory's new vision of "accommodating all rivers and building dreams with United Materials". Over the years, the School of Environmental and Chemical Engineering of Shanghai University has continued to cooperate with Hailian to transform basic research results into product solutions, turning "laboratory papers" into "production line benefits". The commissioning of the new plant is not only an increase in production capacity of 140,000 tons, but also a new starting point for the in-depth integration of industry, academia and research. In the future, both parties will continue to focus on key areas such as green materials, low-carbon processes, and solid waste disposal, and work together to overcome the "stuck neck" problem, making "green and efficient" the distinctive features and core competitiveness of Hailian New Materials, helping Hailian continue to lead in the field of new materials, and allowing more green and efficient fine chemicals to spread from Zhejiang to the country and the world. Ge Shufen, deputy director of the speech highly affirmed the Hailian new materials in the Shaoxing Municipal Government of the high level of coordination and precise guidance, in the Shangyu, Yuecheng two districts of the synergistic promotion of the work done, that the Hailian new materials of the growth and breakthroughs, not only is the enterprise's own dare to break through and try to cultivate the main business of the results of the struggle, but also the city of Shaoxing City, promote the chemical industry to enhance the trans-regional agglomeration and optimization of the industrial layout of the vivid epitome, and looks forward to The company takes the commissioning of the project as an opportunity, strict production standards, seize the production schedule, strengthen safety management, and continue to plough into technological research and development, and constantly improve product competitiveness, for the Shangyu and even China's advanced materials industry development to contribute to a greater strength. After the speech ceremony, a grand and enthusiastic ribbon-cutting ceremony was held, and then Mr. Lu Hai Cai announced the official opening of Hai Luen New Material Shangyu Plant, and the atmosphere at the scene was lively and extraordinary. As an important new force in the field of domestic water-soluble polymer, the company now has an annual output of 140,000 tons of water-soluble polymer fine chemical products. The new name carries new dreams, and the new journey calls for new partners! We sincerely look forward to meeting you on the land of Hangzhou Bay, look forward to the future together, and work together to realize win-win development! We are looking forward to the future together with you, to realize win-win development together!    

Primary Price Drivers Q1：poly dimethyl diallyl ammonium chloride/PolyDADMAC What are the most important determinants of cost? A1： Cost of upstream monomer DMDAAC (dimethyldiallyl ammonium chloride)。PolyDADMAC is polymerized from DMDAAC monomers. Therefore, the price fluctuations of DMDAAC (affected by the prices of its raw materials trimethylamine and diallyl chloride) directly determine PolyDADMAC About 70% The above production costs.   Q2: How does the growth in demand in the water treatment industry directly affect PolyDADMAC prices? A2： Demand dominates。water treatment is PolyDADMAC Largest application area (global shareMore than 50%）。With global population growth, water shortages and increasingly stringent regulations on water and wastewater treatment in various countries, demand for PolyDADMAC continues to grow steadily, driving up its price.   Q3: What impact does the solids content and viscosity of PolyDADMAC products have on price? A3： directly affect。Solid content (such as 20%, 30%, 40%) is a key indicator for measuring the active ingredients. The higher the solid content, the higher the price. Also,low viscosityPolyDADMAC is more popular in some automated dosing systems,Process control is more difficultTherefore, there is often a premium.   Q4: How does crude oil price fluctuations indirectly affect PolyDADMAC prices? A4： Conducted through the raw material supply chain。Some of DMDAAC's raw materials, such as propylene, the precursor of diallyl chloride, are downstream derivatives of crude oil. Therefore, fluctuations in the international crude oil market will affect the prices of basic chemical raw materials, which in turn will indirectly affect the production costs of PolyDADMAC.   Q5: Are there significant differences in pricing in the PolyDADMAC market in different regions? A5： Yes, regional needs and regulations are important factors。example,North AmericaandEuropeanDue to its strict environmental regulations and high-standard applications such as drinking water treatment, there is strong demand for high-performance PolyDADMAC and is often the highest-priced market area in the world.   Secondary Influencing Factors   Q6：PolyDADMAC Does competition for alternatives pose price pressure? A6： posing potential stress。PolyDADMAC faces competition from other inorganic/organic flocculants such as polyacrylamide (PAM) and polyaluminum chloride (PAC) in flocculation and decoloration applications. If alternative prices fall significantly or performance improves, it may force PolyDADMAC price adjustments to remain competitive.   Q7: What impact does REACH or NSF certification have on product pricing? A7： Certification brings premiums and market access advantages。PolyDADMAC, which has passed strict international certifications such as REACH (European Market) or NSF (Drinking Water Safety), has proven its safety, quality and compliance, and can enter high-value markets and earn a premium, but the cost of pre-certification will also be included in the price. Compliance manufacturers such as:Zhejiang xinhaitian   Q8: Will the growth of PolyDADMAC's application in non-water treatment areas such as papermaking and cosmetics affect overall prices? A8： Will, by broadening the demand base impact。Although water treatment is the main application, papermaking (as a retention and drainage aid) and cosmetics (as a conditioner), etc.an aperiodicRapid growth of the application market (such as the cosmetics sector, growth rate can reach 8% or more), providing stable demand support for PolyDADMAC and reducing price fluctuations.   Q9: What impact does industry concentration or the production capacity of leading manufacturers have on prices? A9： The pricing strategy of leading manufacturers is instructive。PolyDADMAC The market has a certain degree of concentration. Head manufacturers (such as our company:Zhejiang xinhaitian) Capacity utilization, inventory levels and strategic pricing have an important impact on price trends across Asia and even global markets.   Q10: How do improvements in production processes (technological innovations) affect the cost structure? A10： Promote long-term cost optimization。New polymerization technologies, catalysts or more energy-efficient reactor designs can increase monomer conversions and reduce energy consumption. This technological innovation can reduce the cost per unit of output and is the key to maintaining long-term price competitiveness.   Q11: How do geopolitics and supply chain stability affect delivery prices? A11： Increase logistics risks and costs。PolyDADMAC's main production bases are concentrated in Asia, while its main consumer markets are scattered. Geophysical conflicts, shortages of shipping containers or soaring logistics costs (such as fuel surcharges) can significantly increase the cost of cross-border trade, which is ultimately reflected in CIF (cost, insurance and freight) quotations.

Q1: When purchasing DADMAC, what are the core indicators that are the primary concern? The primary core indicator isProduct purity and stability。The purity of DADMAC directly affects the performance of downstream products, such as flocculation efficiency, sizing effect, etc., while stability is related to the continuity of the production process and the consistency of finished product quality. High-quality suppliers need to be able to provide clear purity test reports. For products with common specifications such as 60% and 65%, the actual purity fluctuations should be controlled to a very small range. At the same time, during the storage cycle of the product, various indicators need to remain stable without stratification or deterioration. Taking Zhejiang Xinhaitian Biotechnology as an example, as the leading domestic DADMAC manufacturer, the purity of its core product DADMAC can stably reach the specification standards of 60% and 65%. Through the independently developed core technology (Invention Patent No.: CN115521215B), it is controlled from the preparation process to the production equipment to ensure product purity and stability. ​ Q2: In addition to the product itself, what qualifications or strengths do I need to focus on when selecting a DADMAC supplier? Need to focus on inspecting suppliersR & D strength and industry qualificationsThis directly determines the technological advancement, compliance and long-term supply capabilities of its products. R & D strength: Priority is given to suppliers with independent R & D capabilities and core patented technologies. Such suppliers can iterate products based on industry needs and solve pain points in special application scenarios. Industry qualifications: Focus on whether you have passed international authoritative certifications (such as REACH, NSF, etc.), national high-tech enterprise certification, and whether you have participated in the formulation of industry standards. Certification means that the product meets international and domestic quality and environmental protection requirements, and participation in standard formulation reflects the company's technical voice in the industry. As a national high-tech enterprise and an invisible champion cultivation enterprise in Zhejiang Province, Xinhaitian not only independently researched and developed to break the monopoly of foreign technology, but also took the lead in drafting the "Made in Zhejiang" DADMAC standard (T/ZZB3886 -2024). At the same time, its core products have passed EU REACH certification, has an enterprise technology center and a number of invention patents, and its R & D and qualification strength rank among the forefront of the industry.   Q3: From the perspective of long-term cooperation, what capabilities of DADMAC suppliers are indispensable? During long-term cooperation,Production capacity guarantee and full chain service capabilitiesIt is crucial and directly affects procurement costs and cooperation efficiency. Capacity guarantee: Adequate production capacity can avoid production stagnation caused by supply shortage. Especially for large-scale purchasing customers, suppliers need to have stable mass production capabilities and production expansion potential. Service capabilities: It covers full-process services such as pre-sales technical consultation and selection guidance, in-sales order response, logistics and distribution, and after-sales problem solving and technical support, which can quickly match customers 'personalized needs. Xinhaitian currently has a designed DADMAC production capacity of 50,000 tons. At the same time, the new production base built in Hangzhou Bay Shangyu Economic and Technological Development Zone is about to be completed. The annual production capacity will increase to 250,000 tons in the future, which can fully guarantee stable supply to customers around the world. In addition, the company operates in more than 40 countries/regions, providing integrated solutions from R & D, production to sales and services. It can provide customized products and technologies based on customer needs in different industries (such as water treatment, papermaking, textiles, etc.). support.   Q4: There are many DADMAC suppliers on the market. How to quickly screen out high-quality manufacturers that meet your own needs? Available through "Indicator matching + field inspection + case verification"Three-step rapid screening: Indicator matching: First clarify your own core requirements for DADMAC purity, specifications, certification, etc., correspondingly screen suppliers that meet the basic indicators, and exclude manufacturers with incomplete qualifications and product parameters that do not meet the standards. On-site inspection: For the initially screened suppliers, priority should be given to inspecting their production bases, R & D centers and quality inspection processes to visually judge the production capacity scale and quality control capabilities. Case verification: Understand the cooperation cases of suppliers in their own industries, refer to the cooperation evaluations of customers in the same industry, and verify their product adaptability and service reliability. The Xinhaitian factory covers an area of 30,000 square meters and has convenient transportation. Customers are welcome to conduct on-site inspections. The company's products cover 8 major application fields including water treatment, papermaking, and textiles, and serve customers in more than 40 countries/regions around the world. It can provide reference for cooperation cases in corresponding industries and help customers quickly verify cooperation adaptability.   Q5: What is the practical value of choosing a leading DADMAC supplier like New Haitian to corporate development? Working with leading suppliers, you can downloadCost, quality, developmentThree dimensions bring practical value to the enterprise: Cost optimization: The leading manufacturer has a large production capacity and a mature supply chain, which can provide more competitive prices; at the same time, stable product quality can reduce production losses caused by raw material problems and indirectly reduce costs. Quality assurance: The leading manufacturers have a complete quality control system and advanced technology, and their products have stronger compliance and stability, which can ensure that the quality of downstream products meets the standards and reduce market risks. Development empowerment: Leading manufacturers have strong R & D capabilities and can keep up with industry trends to iterate products. They can provide customers with technical support and innovative solutions, help customers enhance product competitiveness and jointly explore markets. New Haitian adheres to the business tenet of "Quality First, Reputation First, and Users First". It not only provides customers with cost-effective DADMAC products, but also relies on R & D advantages and full-chain services to seek common development and win-win cooperation with customers.   h3 { color: #01847F; /* 蓝色文字 */ display: inline-block; /* 使下划线宽度与文字等宽 */ border-bottom: 2px solid #EF4444; /* 2px 红色下划线 */ padding-bottom: 3px; /* 调整下划线与文字的间距 */ transition: color 0.3s ease; /* 平滑过渡效果 */ } h3:hover { color: #3B82F6; /* 悬停时变为绿色文字 */ }

A high-quality manufacturer of DADMAC / PolyDADMAC will take you to explore the subtle changes in the market in the past year According to the results of third-party data platforms, searches related to these two products "dadmac, polydadmac" show that the popularity of these words has increased in the past year. They are "poly acrylamide co diallyldimethylammonium chloride, polydadmac price, polydadmac powder, dadmac 65, polydadmac 40". We tried to explore the business logic behind this.

Quality manufacturer| Supplier-High-efficiency formane-free color fixing agent (50% / 60%)-Zhejiang Xinhaitian Biotech Question 01-What is HTF-658, a high-efficiency non-aldehyde color fixing agent? Which fabric dyeing scenarios are mainly used in? Answer: High-efficiency formal-free color fixing agent HTF-658 is a textile dyeing and finishing auxiliary with a chemical composition of cationic copolymer. The core advantage is that it does not contain free formaldehyde and does not release free formaldehyde, which meets environmental protection requirements. It is mainly used for polyester, viscose, cotton and other fabrics. For these fabrics, dyeing with reactive dyes, direct dyes or fixing after printing, it can improve the soaping, washing, sweating, rubbing, ironing, and sun fastness of the dyed matter without affecting the brightness and color of the dyed matter.   Question 02-What is the biggest advantage of the high-efficiency non-aldehyde color fixing agent HTF-658 compared with ordinary aldehyde color fixing agents? Answer: The biggest advantage lies in environmental protection and safety. The product does not contain free formaldehyde and does not release free formaldehyde. It can meet the current strict requirements of the textile industry on formaldehyde content (such as the limit on formaldehyde content in textiles in national standard GB18401 -2010), avoid formaldehyde fixing agents caused by formaldehyde residues. Environmental compliance risks and do not affect the performance of dyes. Ordinary aldehyde fixing agents are prone to formaldehyde release problems, which may cause the product to fail to meet the standards and leave the factory.   Question 03- What is the reference amount of HTF-658, a high-efficiency non-aldehyde color fixing agent? Are there differences in the amount used according to different usage methods?   Answer: The amount of this product depends on the color shade of the fabric. The reference amount is divided into two methods: 0.3~0.8%(o.w. f)(based on the weight of the fabric) for the dipping method, and 3~5g/L (based on the volume of the treatment liquid). The actual amount needs to be adjusted through the sample adjustment process to ensure the best color fixation effect and avoid insufficient fastness due to insufficient amount, or excessive amount to increase costs.   Question 04- What are the packaging specifications of HTF-658, a high-efficiency non-aldehyde color fixing agent? What should I pay attention to when storing?   Answer: This product is packed in 125 kg plastic drums for easy transportation and storage. Storage must be kept at room temperature and protected from light. Strictly follow this condition. The product storage period is 1 year. If the storage environment temperature is too high, direct sunlight or improper sealing, product performance may be degraded and shelf life may be shortened.   Question 05- What is the reference amount of HTF-658, a high-efficiency non-aldehyde color fixing agent? Are there differences in the amount used according to different usage methods? Answer: The amount of this product depends on the color shade of the fabric. The reference amount is divided into two methods: 0.3~0.8%(o.w. f)(based on the weight of the fabric) for the dipping method, and 3~5g/L (based on the volume of the treatment liquid). The actual amount needs to be adjusted through the sample adjustment process to ensure the best color fixation effect and avoid insufficient fastness due to insufficient amount, or excessive amount to increase costs.   Question 06- 60% aldehyde free color fixing agent, what is the advantage compared with low solid content aldehyde free color fixing agent? Answer: Its high solid content of 60±1%(much higher than the 20%-40% level of some low-solid content products in the industry) has two major advantages: First, it is more efficient per unit dosage. Under the same fixation demand, the amount of high-solid content products is reduced, which can reduce transportation and storage costs (more active ingredients are available under the same weight, reducing transportation frequency); Second, the performance is more stable, and the proportion of impurities in the high-solid content formula is low, which can reduce the potential impact on the color and feel of the dye.     Question 07- What are the appearance and pH indicators of aldehyde free color fixing agent (60%) HTF-367? How to check during acceptance? Answer: The appearance of the product is a light yellow transparent and viscous liquid with a solid content of 60±1%, and a pH range of 7-11. During purchase acceptance, the appearance can be visually observed to see whether it conforms to the description, and at the same time, samples can be taken to test the solid content (according to GB/T 2793-2015 "Determination of Non-Volatile Matter Content in Adhesives") and pH value (according to GB/T 6368-2008 "Potentiometric Method for Determining the pH Value of Aqueous Solutions of Surfactants") to ensure that the indicators meet the standards.   Question 08-Your company's formal-free color fixing agentWhich dyes is the product suitable for fixation? Can it be used to dye fabrics with reactive turquoise dye? Answer: The product is suitable for direct dyes, reactive dyes and fixing printed fabrics. It has significant effects on fabrics dyed with reactive turquoise dyes. It can effectively improve the wet fastness of reactive turquoise dyed fabrics and solve the problem of difficult fixing and low fastness caused by reactive turquoise dyes due to molecular structural characteristics, which is one of the core application advantages of this product.     Question 09- What is the regular minimum order quantity and minimum trial quantity of formaldehyde-free color fixing agent (60%, 50%)? Answer: Based on the packaging specification of 125 kg/barrel, the regular minimum order quantity is 1-2 barrels (125-250 kg), and the minimum trial mining volume can be negotiated to 1 barrel (125 kg). During trial mining, an agreement needs to be signed to clarify the quality standards, trial mining purposes and price connection terms for subsequent batch purchases meet the company's small scale verification needs.   Question 10- If a customer requires a product to pass specific third-party testing (such as OEKO-TEX® Standard 100 certification), can the manufacturer cooperate? Answer: Manufacturers can cooperate to provide product inspection services. If customers need products to pass specific certification tests such as OEKO-TEX® Standard 100, manufacturers can sample samples and send them to designated third-party agencies (such as SGS and Tianxiang) for testing. The testing costs will be borne by both parties through negotiation (usually, the small batch testing fee is borne by the customer, and the batch purchasing fee can be negotiated and borne by the manufacturer). The testing cycle is 7-10 working days, and a test report will be provided after passing the test.     Question 11- What is the reference amount of formaldehyde-free color fixing agent (60%) HTF-367? How to choose dipping method and padding method? Answer: There are two methods for reference dosage: 0.2~0.7%(o.w. f) for dipping method (calculated based on the weight of the fabric), and 4~10g/L for padding method (calculated based on the volume of treatment liquid). The selection needs to be combined with the production process: small-batch, multi-variety fabrics are suitable for using the dipping method, which is flexible to operate; large-batch, continuously produced fabrics are suitable for using the dipping method, which is more efficient. The actual amount needs to be adjusted according to the fabric color depth and dye type. Sample adjustment.   Question 12- Two formaldehyde-free color fixing agents (50%、60%) After the treated fabric is subsequently washed, ironed and other processes, will the fixation effect be lost?   Answer: Under the premise of correct use (operating according to the recommended dosage and temperature) and sufficient fixation, the treated fabric will be washed regularly (according to the standard washing process of GB/T 3921 - 2008) and ironed (temperature ≤150℃, which meets the requirements of fabric ironing), the fixation effect will not be significantly lost. This is because the active ingredients of the two products form chemical bonds with dyes and fibers (such as electrostatic bonds and coordination bonds) rather than simple physical adsorption, and the binding force is strong. However, it should be noted that if a strong alkaline detergent (pH>10) is used for subsequent washing or long-term high temperature immersion (>80℃), some of the bonded structure may be damaged and a small amount of fastness may be reduced. Therefore, it is recommended that subsequent processes follow routine fabric care requirements and avoid extreme conditions.   Question 13- Both formane-free color fixing agent 50% and formane-free color fixing agent (60%) are marked as "formane-free". What specific environmental protection standards do they meet? Can the use of exported textiles meet international requirements? Answer: Both products meet the requirements of the national "Limits on Formaldehyde Content in Textiles"(GB 18401 - 2010) that "the formaldehyde content of textiles in direct contact with skin is ≤75mg/kg, and textiles for infants and young children are ≤20mg/kg", and no free formaldehyde is released through testing. For export scenarios, it can meet international standards such as EU REACH Regulation (formaldehyde restriction clause in Annex XVII), OEKO-TEX ® Standard 100 (formaldehyde limits for Class I-IV textiles) and U.S. CPSIA (formaldehyde requirements for children's textiles). If you need to export to a specific region during procurement, you can require the manufacturer to provide a test report corresponding to the regional environmental protection standards (such as the EU compliance report issued by SGS) to ensure that the product meets the requirements of the target market.   Question 14-When using non-aldehyde color fixing agents, what impact will it have on the fabric if you accidentally add them too much? How to remedy it? Answer: Excessive addition may cause two major problems: ① The fabric feels hard and rough, because excess fixing agent adheres to the surface of the fiber, forming a film-like substance;② Light-colored fabrics may appear dark (especially cationic fixing agents), or "floating" residues appear on dark fabrics. If excessive amount is found, the fabric can be rinsed 2-3 times immediately with warm water at 40-50 ° C (with a small amount of non-ionic detergent), each rinsing time is 10-15 minutes to remove excess fixing agent; if it has been dried, it needs to be re-soaked in warm water (with detergent) for reduction and then rinsed. After remediation, the fixation fastness needs to be re-tested to ensure that it still meets the requirements.   Question 15-What are the main types of formane-free color fixing agents on the market based on ingredients? What are the differences between different categories in application scenarios? Answer: Formaldehyde-free color fixing agents are mainly divided into three categories according to their core components: ① Cationic type (such as cationic polyamines, quaternary ammonium salts), suitable anionic dyes (reactive, direct dyes), due to their strong charge adsorption ability, are most widely used in fixing natural fiber fabrics such as cotton and linen;② Reactive type (Contains reactive groups such as epoxy groups and amino groups), can form covalent bonds with fibers and dyes, and has extremely high fixation fastness. It is suitable for high-end textiles (such as close-fitting clothing and export fabrics);③ Non-ionic (such as polyether), It has good compatibility and does not easily affect the feel of the fabric. It is often used in combination with other types and is mostly used for fabrics with high softness requirements (such as silk and wool). When purchasing, it is necessary to choose according to the dye type and fabric characteristics to avoid poor fixing effect caused by mismatch.     Question 16-If the formane-free color fixing agent is not used up in time after opening, how should it be stored to avoid performance degradation? What are the consequences of improper storage? Answer: After opening, storage must be followed in accordance with the principles of "sealing, avoiding light, and controlling temperature": ① Tighten the lid immediately. If the original bucket is damaged, transfer it to a clean and dry HDPE plastic bucket (complying with GB/T 13508-2011 standard) and seal it;② Store in a cool and ventilated place, and the temperature is controlled at 5-35 ° C to avoid direct sunlight or close to heat sources (such as boilers and heating);③ Cover it tightly after each use to prevent moisture and impurities in the air from mixing in. Improper storage may lead to: ① The active ingredients are volatilized or degraded, resulting in reduced color fixation effect;② The solution is layered and turbid (especially for products with high solid content), which cannot be used uniformly;③ The breeding of microorganisms (in a humid environment) and polluting the fabric. It is recommended to use it within 1 month after opening, and the longest time should not exceed 2 months.​