Oil Free Vacuum Pump, Screw Vacuum Pump, Dry Vacuum Pump manufacturer / supplier in China, offering The First Choice for Scientific Research Institutes: LG-5 Laboratory Grade, with a Precise Pumping Speed of 1.5L/S and Traceable Data, Easy Installation: LG Air-Cooled Series, No Cooling Water Required, Ready to Install and Use, Worry-Free, GMP Certified for The Pharmaceutical Industry: Completely Oil-Free Design, Zero Pollution of The Medium, 100% Clean Vacuum and so on.