... liquid that to engraving all metals of stainless stain, titanium board, gold, silver,copper, iron, stannum etc, it ' s ... It suit for industries of board patternmaking by handset, label electrotyping, exactitude mould industry, printing, printed circuit, packing mould, slush molding ... print machine: It not only engraves copperplate, and steel board, but also colored the engraved print. It could be ...