220V AC Cooling Fan let you cool

Air-flow resistance will cause the air flow noise generation. Due to poor design of air flow channel turbulent high-frequency noise will occur if the runner does not improve very difficult to have a qualitative improvement. Cooling fan speed sooner the better, the greater the greater the "ios版雷竞技官网入口 " the size of the air volume, the better the cooling effect. The larger the fan speed, the higher the noise, the greater the larger the size of the noise.