... 4).Safely wooden packing.... co2 glass laser tubeCO2 Laser tube-It's special glass tube mainly contains CO2 complemented ... Laser Engraving, Laser industrial processing, Quencher, Cutting & Engraving on Leather, Laser Medical Machine, Infrared detecting, etc.function:(1) ... (2)applicable material:leather, cloth,glass, stone,acrylic,wood,color board and so on non metal material(3)applicable industry ...