... precise hollow engraving on engraving plate machineon any paper such as wasted newpaper,color paper, body pater etc.. The mini letteris 2cm ... than handworked engraving. Applicable mateiralLeather, newsprint, film, insulation paper, self-adhensive stickers, thermaltranserpaper, reflective paper, etc.. Techical parameterslaser power 40w/50wworking width 720 ...