... . 3. 1 week sample for stamping 4. 14 years specialized OEM nylon machining parts:Material: brass ,steel, Iron, copper, aluminumFinish: plating of zinc ... etc, anodized, painting, blackProcess: stamping, machining, cold formingMain products: stamping parts, metal stamping, stamped parts,stamping, metal stamping parts, stamped metal partsEquipment: punching machine, lathe ,cold forming ...