# Top Chemical Co., Ltd. > Top Chemical Co., Ltd. is a China-based global chemical supply chain company founded in 2014 with more than 30 years of industry experience, specializing in the export and import of raw materials for polyurethane, adhesives, coatings, composites, and specialty chemicals. Serving clients in 40+ countries including Russia, Japan, Korea, India, Brazil, Mexico, the UK, and Poland, the company offers tailored sourcing solutions and professional technical support. Its product portfolio spans TDI/MDI isocyanates, polyether/polyester polyols, epoxy resins and hardeners, surfactants, catalysts, carbon-negative CO2 polyols, electronic protection coatings and fluorinated fluids (Purcoat), plus a wide range of additives and specialty chemicals. All chemicals are primarily sourced from Chinese manufacturers; Top Chemical operates as an export/import trading and supply-chain service company rather than a producer. The site is organized by business segments, each with detailed grade lists (e.g., TDI-80/20, MDI-50, polyether polyol MW3000, Pd/C catalysts). The 'Purocoat' line covers electronics protection, including 3M Novec replacements and PFAS-free Peco EGC FP. Carbon Negative Emission Products are CO2-based polyols with grades PCE220SL, PCE230S, PCE240D, PCE330P. Note that many URLs are dynamic templates (/news/(.*?).html, /products/(.*?).html, /category/(.*?).html). ## Company & Product Portfolio - [Home](https://www.topchemical.cn): Official homepage of Top Chemical Co., Ltd., presenting the company's global chemical supply-chain services. Visitors can navigate to business segments such as polyurethane, epoxy resins, adhesives & coatings, and catalysts. - [About Us](https://www.topchemical.cn/bb15999ab12b4ca1.html): Introduces Top Chemical's history (founded 2014) and 30+ years of supply-chain expertise in exporting/importing raw materials for polyurethane, adhesives, coatings, and composites from China. Lists the 40+ countries served, including Russia, Japan, Korea, India, Brazil, Mexico, the UK and Poland, and emphasizes tailor-made solutions and professional technical support. - [Products](https://www.topchemical.cn/productList.html): Master catalogue page listing all business segments—polyurethane, surfactants, carbon negative emission products, catalysts, epoxy resins & hardeners, adhesives & coatings & composites, and others. Provides a quick view of representative grades (TDI, MDI, polyols, epoxy diluents, etc.) with links to detailed segment pages and a downloadable catalogue. ## Polyurethane Raw Materials - [Polyurethane](https://www.topchemical.cn/site-page/7003c54c5e81471f.html): Lists the full polyurethane raw-material portfolio: TDI (80/20, 100, 65), MDI (pure, PMDI, HDI, MDI-50), flexible/rigid/elastomer polyether polyols (MW3000–6000), polymer polyols, polyester polyols, propylene oxide, PTMEG, pigment paste, antioxidants, UV stabilizers, catalysts (T-9, A-33, DMCHA, DBTDL), silicone surfactants, flame retardants, and blowing agents. Grades are grouped for foam, elastomer, and system applications. ## Adhesives, Coatings & Composites - [Adhesives & Coatings & Composites](https://www.topchemical.cn/site-page/c892ba50340f4360.html): Covers raw materials for paints, adhesives, and composites: polyester resin, unsaturated polyester resin, alkyd resin, MEKP, styrene-acrylic/acrylic emulsions, titanium dioxide, photoinitiators, UV monomers and oligomers, epoxy acrylates, silanes, nitrocellulose, pigments, PU adhesive, solventless lamination adhesive, and hot-melt PUR adhesive. The page also lists equivalents to BYK & TEGO additives and wood-coating products. ## Epoxy Resins & Hardeners - [Epoxy Resins & Hardeners](https://www.topchemical.cn/site-page/e6e10b8202434d8d.html): Provides epoxy resin and hardener grades: bisphenol A, epichlorohydrin, tetrabromobisphenol A, NPEL-128 and solid epoxy resins, benzyl alcohol, cardanol accelerator, polyether amine hardeners (D230/D2000/T3000), DETA, phenalkamine and modified aliphatic amine curing agents. Also covers active and non-active epoxy diluents. ## Surfactants - [Surfactants](https://www.topchemical.cn/site-page/c8aabb863cb84067.html): Documents the surfactants segment: castor oil + EO polyols, TMP + EO/PO polyols, BPA + EO/PO polyols, PEG/PPG and nonylphenol ethoxylates (NP4/NP5/NP10) with molecular weights from 200 to 2000. Applications include special UV-curing inks, coatings, and adhesives. ## Various Catalysts - [Various Catalysts](https://www.topchemical.cn/site-page/66d24f8fd6cb42d5.html): Shows catalyst product families: carbon-supported precious metals (Pd/C 0.1–30% Pd, Au/C 0.1–10% Au), alumina/TiO2/resin/silica-supported precious metal catalysts, non-precious metal catalysts (copper, iron, nickel, cobalt based), and organic bismuth and zinc catalysts. ## Carbon Negative Emission Products - [Carbon Negative Emission Product](https://www.topchemical.cn/site-page/60ce7793b746449c.html): Details the carbon-negative emission product line of CO2 polyols in grades PCE220SL, PCE230S, PCE240D and PCE330P. These products incorporate carbon dioxide into polyols, supporting reduced-carbon polyurethane manufacturing. ## Electronic Protection Coatings (Purocoat) - [Purocoat](https://www.topchemical.cn/site-page/02ecce50db20484f.html): Introduces electronic protection coatings and fluorinated fluids for harsh environments, protecting circuits from moisture, particulate matter, and corrosive gases. Includes Purcoat Series, Purcoat UV, 3M Novec replacements, fluoropolymer coating equipment, PFAS-free Peco EGC FP, solar panel layers, and electronic coolants. ## Other Specialty Chemicals & Additives - [Others](https://www.topchemical.cn/site-page/6a0d10b23b594930.html): A broad catalog of specialty chemicals: optical brightening agent OB-1, VAE re-dispersible powder, rubber antioxidants and vulcanizing accelerators (6PPD, CBS, MBTS, TBBS), xanthan gum, cellulose ethers (CMC, HEC, HPMC, HEMC), organic acids (oxalic, adipic, acrylic, sebacic, oleic, formic), 1,4-BDO, 1,6-HDO, plasticizers, nitrile rubber, PVDF, PVA and intermediates such as clarithromycin and para-aminophenol. ## Site Tools & Resources - [Support](https://www.topchemical.cn/support.html): Support page for technical assistance and customer service; the company highlights professional technical support and customized solutions for each client's application. - [News Details](https://www.topchemical.cn/news/(.*?).html): Pattern page for the news section: hosts press releases and articles about Top Chemical's product launches, supply-chain updates and market activities. - [Product Details](https://www.topchemical.cn/products/(.*?).html): Opens a specific chemical entry from the catalogue; each entry shows the product's grade/specification (e.g., polyols, epoxy resins, catalysts) and directs visitors to contact the sales team. - [Product Category](https://www.topchemical.cn/category/(.*?).html): Pattern page for category browsing: groups products by business segment so visitors can filter the catalogue by product family.