We are a private-based factory established in 1988. Our factory is located at the south end of the building Hangzhou Bay Bridge. We manufacture and supply the following products: Engine parts:Timing idler shaft, valve spring retainers and valve spring seats,hollow bolts and ring nipples. Pipe fittings: Pipe plugs, screw plugs,pipe nipples, pipe caps, reducers, expanders,male or female pipe adapters, screwed plugs conform to NPT,DIN and BSPT standard thread. Fasteners:Hex head or socket bolts according to ANIS,DIN AND BS standards. We can also produce special and unstandard products according to customs drawing or samples. Our main processing include cold working, forging, pressing, grinding, machining, threading, quenching, coating and black finishing etc. We dedicate ourself to quality and system improvement and acquired ISO9001 in 2001