With innovative design on the basis of foreign advanced technology, MC-II miniature precision air filter becomes the successor of domestic QFH111, 221.261, air filter pressure reducer to instead of the imported pressure reducer. It can filter and purify air and 1.75Mpa air pressure, and can regulate any output force in output pressure range to keep stable. As an ideal stabilized air supply unit, This filter is equipped with various pneumatic control instruments, solenoid valve, cylinder transmitter, sensor, positioner, converter, pressing shaft machine, spraying equipment, small pneumatic tools, automatic oiler, and pneumatic welding equipment. This product is widely applied in the industrial pneumatic control system such as petroleum, chemical, metallurgical, power plants and so on.