The history of human acquisition of vacuum can be traced back to the 6th century BC. The blast system of smelting furnaces and alchemy furnaces utilizes negative pressure suction and pressurized exhaust. Oil free compressors, high-pressure machines, Laibao vacuum pumps, dry screw vacuum pumps, rot

pharmacy Antibiotics are a panacea that can cure many diseases, and the fermentation process in production requires a large amount of compressed air. The oil-free air compressor provides 52000m3 of compressed air at a pressure of 25psig per second to provide oxygen to microorganisms, which is cruci