China Hangzhou Tianniu Automotive Parts Co., Ltd. is located at Baiyang Sub‑district, Qiantang District, Hangzhou, China. We are an industrial manufacturer specialized in R&D and production of heavy‑duty truck electrical components.

Our main product portfolio covers vehicle main power switches, air horns, electric horns, automotive relays, and electrical connectors for heavy‑duty trucks and commercial vehicles. Focusing on commercial‑vehicle electrical spare parts, we have established complete production and quality‑control procedures. Each product is tested for high reliability, environmental resistance and long service life, compatible with a wide range of heavy‑truck models.

We supply standard off‑the‑shelf items for global buyers, and also provide professional OEM & ODM customization services. Our clients include overseas distributors, after‑market repair partners and vehicle manufacturers worldwide.

With consistent product quality, reliable lead‑time and professional export support, we strive to be your trustworthy Chinese supplier of heavy‑truck components. We sincerely look forward to building long‑term partnerships with customers across the globe.