Roller Chain, Sprocket, Pulley manufacturer / supplier in China, offering Precision-Engineered Anti-Wear OEM Customizable Roller Chain Sprocket - Heat-Treated Alloy Steel for Mining & Automotive Assembly, Robust Shock-Resistant Roller Chain Sprocket - Alloy Steel Power Transmission for Heavy-Duty Manufacturing, Super-Strong Long-Lasting High-Torque Roller Chain Sprocket - Heat-Treated Steel Transmission Part for Automotive & Excavators and so on.