Shanghai Yuanhong Industrial Co., Ltd. is a Textile Dyeing Auxiliaries manufacturer with headquarters in the Shanghai Songjiang Industrial Zone Science and Technology Park and an organic synthesis factory in Jiaxing, Zhejiang, China. We supply dychouses and textile finishing plants with a focused range of scouring and degreasing agents, high-temperature leveling agents, cationic dyeing auxiliaries, dye fixing and mending agents, wetting and penetrating agents, and crease preventers. Our formulas are developed for real working conditions: one-bath scouring and dyeing, high salt and metal ion loads, hard water, microfiber substrates, and strict shade repeatability.
This Textile Dyeing Auxiliaries range serves polyester and spandex knits, cotton knitted fabric, acrylic and nylon blends, T/C one-bath processing, and high-temperature jet and overflow dyeing. We support mills from lab-scale formulation trials through production-scale dosing, and we co-develop modified products when an existing grade does not match your water quality, machine type, or restricted substance list.
Product Range and Application Fit
We organize the range around five processing jobs in the dychouse:
Scouring and degreasing
One-bath degreasing and scouring for polyester knitted fabrics, spandex-containing knits, and cotton knitted fabric. Products such as YH-106E emulsify and disperse spinning oils in near-neutral and weakly acidic baths, remove chemical fiber oils, and minimize shade change in combined scouring-dyeing. LTB-05 handles cotton scouring and cleaning, while YH-ARP3 provides multi-functional wetting and penetration for uniform bath contact.
High-temperature leveling and dispersion
YH-8803 and YH-660H address disperse dye aggregation, tar formation, and uneven build-up on polyester and microfiber. YH-8803 combines dispersion, leveling, and migration with ultra-low foaming for jet machines. YH-660H adds chelating performance on calcium, magnesium, and iron ions and is formulated phosphorus-free and nitrogen-free, supporting eco-friendly dychouse programs.
Cationic dyeing auxiliaries
YH-580H is an amphoteric ion polymer for dip dyeing of acrylic fiber and acrylic blends. It provides retarding and migration without interfering with the uptake of acid dyes on nylon components, and it remains compatible with auxiliaries of different ionic character.
Dye fixing and shade mending
YH-8890H and YH-8890 repair uneven dyeing, barré, and unlevel shades on polyester. They improve dispersing and leveling, resist high salt concentrations, and generate ultra-low foam. YH-8890 works under high temperature and high pressure to transfer disperse dye from high-concentration to low-concentration areas, which restores uniform depth and reduces reprocessing cost.
Crease and wrinkle prevention
YHSM prevents crease and wrinkle marks in high-temperature dyeing of knitted and woven fabrics, especially when the load density and machine liquor ratio make crease fixation likely.
The table below summarizes the usual selection for each substrate and defect pattern:
| Product family |
Representative grades |
Typical substrate and process |
Primary function |
| Scouring and degreasing |
YH-106E, LTB-05, YH-ARP3 |
Polyester knit, spandex blends, cotton knit; one-bath scouring-dyeing |
Oil emulsification, scouring, wetting, stain prevention |
| High-temperature leveling |
YH-8803, YH-660H |
Polyester, microfiber, T/C; jet and overflow dyeing |
Dispersion, leveling, chelation, ultra-low foam |
| Cationic dyeing |
YH-580H |
Acrylic fiber and blends |
Retarding and migration for cationic dyes |
| Dye fixing and mending |
YH-8890H, YH-8890 |
Polyester; barré, unlevel shades, shade correction |
Disperse dye migration, dispersing, leveling |
| Crease prevention |
YHSM |
Knits and wovens in high-temperature dyeing |
Crease and wrinkle mark prevention |
Our Textile Pretreatment Auxiliaries range cleans and prepares the substrate; our Textile Finishing Auxiliaries range adds surface and functional properties after dyeing.
Engineering Value and Development Support
We operate through Shanghai Yuanhong and its subsidiaries, with R&D spanning raw material evaluation, formulation design, process optimization, and quality control. An organic synthesis factory in Jiaxing gives us direct control from monomer and polymer synthesis to finished aqueous auxiliaries. Our R&D team collaborates with domestic and international universities, and we hold core patents in home textiles, high-end apparel fabrics, raising and sanding specialties, and microencapsulated coating materials.
For dyeing auxiliaries, this means we can adjust HLB balance, ionic character, foam profile, and salt tolerance around your equipment rather than asking you to modify a recipe. We can also develop a modified grade when your line requires lower VOC, phosphorus-free composition, or compatibility with specific dye classes.
Quality, Compliance and Sustainability
Our quality approach starts with incoming raw material evaluation and continues through formulation, production, and batch QC. Each dyeing auxiliary is released with physical and chemical property checks, including appearance, ionicity, pH, solubility, and foaming behavior where applicable. Standard packaging is 50 kg or 125 kg plastic drums, and sealed storage is six months in a dry, cool, ventilated warehouse.
Our certification listing includes OEKO-TEX for applicable products, and product-specific compliance documents are provided with the proposal. We are actively seeking ZDHC membership and design products toward low-foam, high-efficiency, and more sustainable processing. Eco-friendly grades such as YH-660H are phosphorus-free and nitrogen-free to support mills that need to reduce nutrient loading in effluent.
Information We Use to Configure Your Solution
To prepare a configuration and quotation, we use the actual working point rather than a generic recommendation. Include what is relevant:
- Fiber composition and construction: polyester, spandex, cotton, acrylic, nylon, T/C, or blends; knit, woven, or package form.
- Dyeing machine and liquor ratio: jet, overflow, jig, winch, or package dyeing; high-temperature or atmospheric conditions.
- Process objective: one-bath scouring-dyeing, dispersion of oils, leveling, retarding, shade correction, or crease prevention.
- Water quality and salt load: hardness, iron, calcium and magnesium levels, glauber’s salt or sodium chloride concentration.
- Current defect pattern: oil stains, color spots, barré, unlevel shades, poor dye uptake, or crease marks.
- Compliance constraints: OEKO-TEX, ZDHC, brand restricted substance lists, or requirements for phosphorus-free and nitrogen-free products.
With those inputs, we recommend the product, dosage range, pH window, and application sequence. We can also arrange lab-scale trials and adjust the formulation when the standard grade does not match the full production condition.
Supply, Delivery and Dosing Integration
Dyeing auxiliaries are supplied as ready-to-dose liquids, with each batch documented for identification, batch number, and shelf life. We work with your existing dosing station or provide guidance for dilution, feed rate, and process timing. Most of the range is cold-water soluble, so it can be added directly to the dye bath or via the chemical addition tank.
Shipment is normally in 50 kg or 125 kg drums. Larger programs can be planned on a scheduled supply basis to match your monthly production volume. Storage instructions are printed on each drum, and we provide a material safety data sheet with every first shipment and on request for subsequent orders.
Frequently Asked Questions
Can you adjust an existing dyeing auxiliary to meet our water quality?
Yes. We start with the specification sheet and then modify the formula if needed. Send us water hardness, ion levels, and the current defect pattern, and we will recommend either a stock grade or a modified product for lab trial.
Which products work best for one-bath scouring and dyeing of polyester and cotton?
For polyester and spandex knits, YH-106E is designed for one-bath degreasing and dyeing. For cotton knitted fabric, LTB-05 supports one-bath scouring and cleaning. Both are selected with the dye class and machine type in mind.
How do I choose between YH-8803 and YH-660H?
YH-8803 is a high-temperature ultra-fine leveling agent for microfiber and polyester with very low foam. YH-660H is an eco-friendly rapid leveling agent that adds chelation of calcium, magnesium, and iron, and is phosphorus-free and nitrogen-free. If water hardness or metal ions affect reactive dye shades, YH-660H is usually the better starting point.
Do you support shade correction on polyester without re-dyeing?
Yes. Eco-friendly dye fixing mending agents YH-8890H and YH-8890 migrate disperse dye under high temperature and high pressure, breaking barré and equalizing shade differences. YH-8890H also provides dispersing and leveling in the same bath.
What documents do you provide for export orders?
Each shipment includes batch-specific technical data, packaging details, and safety documentation. Applicable OEKO-TEX listings and compliance declarations are provided with the proposal so your quality team can review them before purchase.
Can we receive samples before full-scale purchase?
Yes, we support lab and pilot trials. Typical dosages from the product data sheets are starting points; we confirm the dosage and application sequence with your water and fabric sample.
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