... parts, turned parts, bending parts, screwing parts, welding products, stamping parts etc. 1) We make kinds of metal parts: Machined parts, turned parts, bending parts, screwing parts, welding products, stamping parts ... ISO 9001 management, all of our metal parts have very strict inspection before packing and ... 316 etc, brass, aluminum alloy 5052, 6061 etc are made for the parts, just according to ...