Miniature centrifugal fans are consisting of inner rotor/outer rotor asynchronous motor, metal impeller, and so on. Complying with international general standard. Featured by compact form, weight light, small size, bigger air volume, easy installation and other excellent performance. This series of fan has higher silence, especially used for automatic control devices, electronic devices forcing ventilation. It’s also applicant for indoors, exhaust, environmental protection, air purification and pollution control etc.