Laser Machine, Laser Marking Machine, Laser Engraving Machine manufacturer / supplier in China, offering Laser Focusing Lens F=50.8mm / 63.5mm, Dia. 20mm Made in China Since 2009, Puri Water Cooling CO2 Laser Tube with Stable Beam Quality, Puri Long Lifetime CO2 Laser Tube for Engraving Equipment and so on.