... Machinery (Dongguan) Co.,Ltd is a professional factory which specilized in precision machining parts for more ... stainless steel machining parts , alloy steel machining parts ,brass machining parts , bronze machining parts , copper machining ... stamping, bending, punching, threading,welding, tapping, rivetingMaterialAluminum, copper, brass, stainless steel, steel, iron, alloy, zinc etc.FinishPolishing; ...