Micro air pump refers to the compact size, the working medium is gaseous, mainly used for gas sampling, gas circulation, vacuum adsorption, vacuum pressure preservation, pumping, pumping, pressurization and other uses of a gas conveying device. Miniature pumps are divided into: miniature negative pressure pump, miniature vacuum pump, miniature gas circulation pump, miniature air pump, miniature gas sampling pump, miniature pumping pump, miniature pumping pump, miniature pumping pumps, miniature pumping pumps and so on; according to the principle of operation, diaphragm-type, electromagnetic, impeller-type, piston type and so on. General health care, scientific research, laboratories, environmental protection, instrumentation, chemical industry and other industries applicable to a wide range of miniature air pumps mainly refers to miniature vacuum pumps.