Apogee HVLS Fan has 12years manufacturing experience, our core technology is PMSM motor and smart controller, we have more than 260 employees, including 30 R&D engineers, 160 workers for production line and installation team, and 50 sales, each year we sold 8000pcs fan all over the world, served 30+ countries, 5000+customers for industrial and commercial. Apogee fans are designed in IP65 and meet IE4 energy standard, high reliability defect rate is less than 0.1%. Welcome your inquiry, and join "Apogee Distributor Plan", Good fan, good price and good business waiting for you! Thank you!