Our company mainly manufactures Piston rings for truck, car, motorcycle and general applied engines. Our products have very good performance in wear resistance, air tightness, oil controlling and high output. The RS autoparts uses high quality materials, such as imported steel from USA and Sweden, cast iron and ductile iron with 90% numerical control and automation production. Surface treatment:chromeplating, nitriding. Phosphate coating and oxidation are being applied to surface protection. The PVD technology also appled to strengthen our advantage on surface coating.