Full Metal "Tiny Cooling Fan" using the stator design fully enclosed, moisture-proof dust levels up to IP54, can adapt to harsh environment, effectively prevent corrosive gases or liquids, dust from entering the movement. This is currently on the market, the most reliable and effective product structure. Other similar products to narrow the "Tiny Cooling Fan" structural gap, moisture and dust to achieve the same effect, in fact, this structure has not had reliable. All-metal blade can effectively conducting heat, with stator insulation class F-class, so that the entire all-metal cooling fan to work in high-temperature environments, but also to ensure reliable performance. Full Metal "Tiny Cooling Fan" compared with other plastic fan products, but do not worry because of high temperature or high temperature and low temperature impact, causing thermal deformation of blades or loosen the blade axis, thereby affecting the cooling effect and product life.