... 4,high quality and low price Product name CD lines Headphones shell Materials Available1. Stainless Steel: SS201, SS303 ... chrome plating, yellow passivation, gold passivation, galvanizing, satin, etc.Processing Methodcnc machining, turning, milling, drilling, grinding, broaching, welding ... with the high quality and low price .Mainly processing and manufacturing various kinds of metal parts and screw ...