... ,metal color, metal plating,electrophoresis, polishing,Aluminum color Multi-functional High speed electronic engraving machine is one of used specific liquid that to ... 01105380.1 etc, via of testing report from National product quality & control bureau: NPQC No.3. 200150013, as well as via ... any metals (includes of nonmetal even if coated by one layer of metal) and any shape of plane bend, slice and ...