China BV Approved Transmission Conveyor Motorcycle/Timing /Bicycle Link Chain Roller Chain /Hollow Chain/ Industrial Steel Pintle Chain wholesaler
Merchandise Description Solution Description Heat therapy Harden tooth, tempering, queching Floor therapy zinc plated, blacken, phopharization, carborized Procedure Forging( casting)—lathe- teeth shaping—finishing—oil washing—Packing ,produced by CNC equipment […]