... , metal plating,electrophoresis, polishing,Aluminum color Multi-functional High speed electronic engraving machine is one of used specific liquid that to engraving ... rhodium on various metals, for plating gold (24k gold, 18 k gold, and imitated gold), it not only for rapid plating ... mould, the manufacturing of forming electrode for electric spark, 24 k gold and pure silver goods, forming of VCD mould, ...