... electroform,metal color, metal plating,electrophoresis, polishing,Aluminum color Multi-functional High speed electronic engraving machine is one of used specific ... 01105380.1 etc, via of testing report from National product quality & control bureau: NPQC No.3. 200150013, as well ... silver, etc. with a strong power, high speed, lower stress, and top quality. It suit for industries of board patternmaking ...