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Hangzhou Top Win Technology Development Co., Ltd.

Topwin is established by Wynca Group together with several specialty silicone companies for the purpose of integrating the complete silicone industry chain and marketing into the end-product fields. The company's competitive advantage is rooted in its founders, who possess extensive expertise in both the upstream and downstream sectors of the supply chain.

 

Specializing in the research and development, production, sales and marketing of silicone-based special functional performance materials, Topwin also serves as a professional provider of technical services. Now our products are widely used in Release Coating for Paper & Film, Coatings and Inks, Leather and Textile, Crop Protection, Polyurethane Foam, Home & Personal Care and others.

 

Topwin
Topwin is one of the leading & professional manufacturer specialized in producing all kinds of SILICONE BASED new materials.
Wynca Group
Topwin is a member of Wynca,
Wynca is one of the top 500 chemical enterprise in China and the top 20 agrochemical sales enterprise in the world.
Technical Service
A R&D team with more than 20 years'
experience, have domestic top-level engineers in silicone surfactant industry.
Customer service
Have perfect innovation system, provide stable quality with competitive price and excellent service.

Company News

03 2026-08
How to Eliminate Crater Defects & Restore Stereo Texture for Waterborne Synthetic Leather? WynCoat® SL-3248 Water-Based Wetting Agent
22 2026-07
Can a Domestic Silicone Defoamer Replace Dow Corning DC65? WynCoat SD-3165 matches DC65, solving supply & crater issues for waterborne coatings and inks
22 2026-07
How to Boost Abrasion & Hand Feel of Solvent PU Leather? WynCoat SE-7109F Solvent-Based Leather Abrasion-Resistant Hand Feel Agent
17 2026-07
Silicone-Based Gemini Wetting Agent for Waterborne Coatings
26 2026-06
How to Break the "Hydrolysis Challenge" of Agricultural Silicone Adjuvants
22 2026-06
Topwin Exhibits at APFE 2026 | Welcome to Booth 6T118 On-site Tech Support & Custom Solution Consultation We warmly await your visit!
27 2026-05
Siemtcoat® SF211 Solventless Light Release Coating Siemtcoat® SF211 is a 100% solids solventless release coating by Topwin. Zero VOC, stable light release, no residue, low-temperature fast curing. Widely used in labels, tapes, medical supplies, food packaging and stationery.
18 2026-05
Can Solventless Release Agent Empower Green & Efficient PET Film Coating? Siemtcoat® SF370 for PET film coating, enabling green, efficient, high-quality release coating with zero VOCs and stable performance.
18 2026-05
How to Solve Long‑Distance Transportation Challenges of Polyurethane Foam? Silicone surfactant XH2596N reduces compression set of PU foam, enables compression packaging, and solves high‑cost transportation issues.
18 2026-05
What’s the New Eco‑friendly Silicone Softener for High‑End Synthetic Leather? SE‑7052, an eco‑friendly softener for synthetic leather. It is solvent‑free, skin‑friendly, durable, easy to apply, and ideal for footwear, bags, furniture and automotive interiors.

Industry News

03 2026-08
How to Produce Stable Rigid Foam for LNG Cryogenic Insulation? Topwin XH-1698 delivers high closed-cell rigid foam for LNG cryogenic insulation. Adopt hydrolysis-resistant polyether-modified siloxane with Si-C bonds;
03 2026-08
How to Achieve Luxurious Soft Hand Feel & Superior Scratch Resistance for High-End Leather? Nowadays, consumers pursue premium tactile experience for automotive interiors, high-end furniture sofas, fashion leather bags and accessories beyond basic appearance. They expect ultra-smooth, baby-skin-like softness while requiring leather to withstand daily wear and retain flawless looks long-term...
03 2026-08
How to Solve Common Defects in Water-Based Glove Coatings? Ideal additive for glove coating: powerful wetting, excellent hydrolysis resistance and reliable performance. Poor wetting, craters, pinholes and additive failure under acid and alkaline conditions are major issues that ruin appearance and production stability in glove coating manufacturing.
30 2026-05
How to Optimize Cell Structure and Hand Feel for MDI-Based Memory Foam? Dual Silicone Surfactant System
18 2026-05
Low-Fogging Surfactants for Automotive High-Resilience Foam Our low-fogging surfactants are specifically designed for high-resilience molded foam in automotive interiors. They effectively reduce VOC emissions, prevent windshield fogging and glare, meet global industry standards, and create a safe, healthy in-car environment.
12 2026-05
What Is Double PE & Double Silicone PE-Coated Release Liner? Siemtcoat® SF501: The Ideal Solution for Double-Sided PE-Coated Paper
05 2026-05
What is WynCoat ® SL-3310? It delivers outstanding wetting and leveling properties.
25 2026-04
SE-7037 Sound-Dampening Leather Finishing Agent Leads a New Trend of Functional Upgrading in the Industry
16 2026-04
Innovative Application of Silicone Surfactant in Cold Chain Panels / logistics industry
19 2026-03
Topwin Siemtcoat® SF501: Transforming Double-Side Coating Solutions for PE-Coated Paper