"Foshan Beirio Electromechanical Equipment Co., Ltd. (KAKU South China Branch) is a subsidiary established by Taiwan KAKU in the South China region of mainland China. It is responsible for the sales of KAKU's existing products and the promotion and trial marketing of new KAKU products in the South China market. There are many counterfeit KAKU products on the market. To protect your customers' interests, please choose genuine KAKU products. Why is the KAKU (KA2072HA2B) axial fan the only fan in China to pass the IP55 certification? The first '5' in IP55 represents the dust protection level, and the second '5' represents the waterproof level. The higher the number, the higher the protection level. Other brands of fans on the market have not undergone IP rating tests. Their dust protection can only reach a certain level, and they lack waterproof functionality, so they can only be labeled as IP4X.