... , paper,wood 4)CE,ISO CO2 laser cutting machine with 2 heads, co2 mini laser engraving machine 1) mini co2 laser engraving machine2) DSP,USB interface 3 ... :0°C~45°C,humidity :5~80percentWarrantyOne year for whole machine except of laser tube(2500hours)and lens Acrylic Laser Engraving Machine & Two Head