Semi trailer kingpin,s-camshaft,twist lock,passed TS16949:2009,Our company has been specialized in producing trailer parts for over twenty years ,we have our work shops for set forging , turning , fine grinding and heat treatment . With excellent technology and advanced testing equipment ,every year we are able to produce 15 million sets of kingpins ,100 000sets of container locks and 200 000 paris of brake camshafts .We are also good producing special products according to customers’ special requirements with high quality standard . 80% of our products are exported to Eastern Europe, South Africa ,Southeast Asia, which win good reputation among the same industry .