Laser engraving machine 1:aluminum platform(optional) 2: step motor 3:belt transmisson 4:Electric up-down worktable laser ... , hollow on different nonmetal materials with graphic, text, and logos.2:CO2 laser tube:RECI CO2 sealed glass laser tube, with ... 9 months. While the whole machine guaranteed for 12 months.2. 24 hours technical support by email or calling3. User-friendly ...