
Shanghai Siyi Fans Co., Ltd contributes to study and manufacture energy saving ventilation equipment to improve safety, productivity, and energy consumption. We adopts PMSM advanced techniques of high air volume and low rotating speed to manufacture HVLS industrial ceiling fan, which is the most effective ventilation equipment for large space. We only focus on one thing HVLS industrial fan. After repeatedly research and development of the fan, we continuously improve its performance to satisfy our ...