Portable metal words laser welding machine 1.easy to use 2. ... :stainless steel, steel plate, iron plate, aluminum,and other metal and alloy.Advantages:1.Humanistic design, a tight structure of ... arm ,arbitrary rotation for 360° , no size limit on metal words.2.Can store 50 pieces welding parameter ,very convenient ... and vibrate, Temp :13-28°C ,Humidity :5%-75% Portable metal words laser welding machine