... ensure machine work stablely.*beam quality: 0.07mm, which is suitable for high precision material engraving/cutting/marking*high stability ... : RF laser tube---whole sealing metal tube, adopt 30V low-voltage power supply, which make sure machine ... acrylic, wood, etc non-metal material3. Applicable Industyco2 laser marking mahine is widely used for leather, food, beverage, cloth, ...