co2 laser tubes:high power, good beam spot,competitive price, which are applied to laser engraving, laser cutting.etc. Beijing EFR Laser S&T Co., Ltd, ... used in industrial cutting, laser mould processing, laser cutting machine, laser marking machine, leather processing, decoration and laser medical treatment machine and lots of other fields ... CL-1250Ø55×125065 7022CL-1200Ø55×120060 7022 co2 laser tube