... by buyer's request 2.drawings are appreciated 3.OEM is ok 4.use in car,ship,home appliance,etc metal ... tinplate), aluminum alloy, red copper, brass, bronze alloy. etc. are available.4. Process: stamping, deep drawing, welding, Bending, sheet metal ... developing, production to surface treatment.15. Drawings and detailed descriptions are appreciated.16. The machines: grinding machine, milling machine, ...