... speed and low cost 4.CE BYT-3055 Electric Metal Plate Etching MachineApplication: Suit for the ... steel,titanium board, zinc,aluminum,copper and any electric conductor.Features:1)Work by ionization effect to ... Can be arbitrarily choose the site, housing and door head room, the clean health, only 5 square ... picture: Samples: CEFactory and workshop: 2012 Hot! Electric Metal Plate Etching Machine BYT3055