... Stamping,Machining,Die casting,Plastic injection 2.stainless steel,steel,brass,copper... Metal PROCESSING SERVICE PROVIDERGAOGEL METAL ... Metal Stamping, Machining, Die casting, Welding, Bending, Grilling, Plastic injection, ect. 4. Manufacturing ability of GAOGEL ... generate electricity ourselves. 5.Material we can processing:Steel, Stainless steel, Copper,Brass,Aluminum,Zinc... 6.surface treatment: ...