W. Fans series industrial fans are new HVLS energy-saving super large industrial fans independently developed by Dawang ventilation based on PMSM (permanent magnet synchronous motor) permanent magnet synchronous principle, with 260N.m stable torque, stronger driving force and more stable torque. It meets the IE4 high efficiency and energy saving standard and saves energy consumption by 30%. The fan diameter is from 3.1m to 8m, and the full load air volume is up to 15800m3/min.