1,Material: steel,stainless steel,aluminium, brass 2,customized sureface treatment 3,High QC standard ... plating, chrome plating, yellow passivation, gold passivation, galvanizing, satin, etc.Processing Methodcnc machining, turning, milling, drilling, grinding, broaching, welding and ... between Europe and China. steel stamping parts, stainless steel, aluminium, brass all can be stamped