... china - Chengdu, which is aprofessional custom precision metal parts manufacturer specializing in design, manufacture,assembly, ... CNC turning, CNC milling, precision casting,fastener, automobile & Equipment parts,packaging machine parts, gear and etc.we ... steel oxidizing dark-blue, electro-polishing, electroless nickel plating, silver plating,golden plating and so on. cnc machining stainless steel parts ...