... 2.No oxidation 3.welding smoothly 4.high precision Copper Laser Welding Machine Model features Automatic laser welder adopts manual+programming automatic ... , so it's Convenient and practical..Application titanium,nickel, tin,copper, aluminum,steel and their alloys welder .Technical parametersModelCXW-200Working table ... 13 °C -28 °C, humidity 5% -75%Packaging:wooden case Copper Laser Welding Machine