... all metals of stainless stain, titanium board, gold, silver,copper, iron, stannum etc, it ' s a new technology product that ... engrave any metals (includes of nonmetal even if coated by one layer of metal) and any shape of plane bend, slice and ... lower stress, and top quality. It suit for industries of board patternmaking by handset, label electrotyping, exactitude mould industry, printing, printed ...