Oil free scroll vacuum pumps manufacturer / supplier in China, offering 20L/s (60Hz); 17L/s (50Hz) air cooled oil free scroll vacuum pump, 8.7L/s (50Hz) 1Pa industrial or lab clean oil free scroll vacuum pump, GWSP300 15.5m³/h (50Hz) 2.6Pa lab or industry or freeze dryer dry clean air oil free oil less scroll vacuum pump and so on.