... 5)got CE Metal etching machine BYT3055Application: suit for the different size etching, such as advertisement,sign brand, ,equipment panel , ... :1)Work by ionization effect to strip the metal2)Processing all conductive metal ,like stainless steel, titanium plate, ... can rapidly titanium , stainless steel, copper, aluminum plate, processing area wide, broad market, every hour power consumption only 1 ...