They are developed specially in the case of increasingly more inflatable advertising model at home now, many types of scattered and low efficient matching fans. This series of fans are forward multi-blade centrifugal fans that are characterized by small volume, high efficiency, low noise and high inflation rate. They are applied to various types of inflation models. The inflatable fans produced by the factory have been improved constantly during the long time of use by large gas model users. They are mature products with stable performance and good effect now.