... .2) Material: cold-rolled sheet,stainless steel,carbonsteel ,alu alloy or alloy with various sheet3) Surface treatment: kinds of plating(Zinc,Chrome ... drawing, spinning, forging, etc.MaterialAluminum, copper, brass, stainless steel, steel, iron, alloy, zinc , carbon steel, rubber and plastic .etcFinishPolishing; Anodize; SandingPowder coating ...