... plating,electrophoresis, polishing,Aluminum color Multi-functional High speed electronic engraving machine is one of used ... , patent of outside design 01 3 10638.4, patent of invention 01105380.1 etc, via ... for engraving any picture on it. with high precision, high speed, lower cost, no limit for the engraving ... it suit for all noble metals plating industries. 4. Work as one of electrotyping machine: It ...