... sealed CO2 laser tube, the beam of light is of high quality and the lifespan is ... cement, organic glass , wooden product , articles are made of bamboo , ceramics etc .4.Samples and accessories:5. ... length 10 months for laser tube,lens6.Technical specification of Laser cutting and engraving machine: ModelLS-5030LS ... engraving machine:We supply online service 24 hours a day MSN, Skype, Yahoo, Gmail and ...