Laser Machine, Laser Marking Machine, Laser Engraving Machine manufacturer / supplier in China, offering Laser Focusing Lens F=2 Inches Dia. 20mm Made in China Since 2009, Focusing Lens F=2inches/ 2.5inches, Dia. 20mm Made in China Since 2009, Durable CO2 Laser Tube with Sealed Glass and Ceramic Ends and so on.