... 4 24-hour technical support TK-4040 paper stamp mini laser engraver Features:1. Working area 400x400mm, tiny ... organic glass, crystal, plastic, garments, paper, leather, rubber, ceramic, glass and other nonmetal materials. Technical parameters: Machine ModelTK-4040 ... paper stamp mini laser engraverLaser-typeHermetic and detached CO2 laser tubeLaser- ...