OPT PMSM fan has a maximum diameter of 7.3 meters. The product combines a series of advanced technologies such as aerodynamics, transmission dynamics, pulse width modulation control technology, mechanical mechanics, simulation technology, communication control, industrial design, etc., and is manufactured by advanced precision processing equipment at home and abroad. It can promote the circulation of space airflow under extremely high efficiency, achieve the purpose of cooling personnel, and greatly improve the environmental comfort….