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 15072m / min. it is truly maint