... precision,stable,USB port 3 Apply various nonmetals 4,Laser tube:CO2. Technology parameters:TypeLK3Laser power40wpower voltage AC220V enclosed ... precision, multi-function sculptureProduct features:1, A single lens, laser beam directly, power use fully focused, easy maintenance.2, Advanced ... reasonable designed, high speed, strong and durable.4, Laser power, to adapt to the environment of antistatic.5, ...