QMA Electric (Shanghai) Co., Ltd is a company which is specialized in researching and developing automation control system.

QMA Electric (Shanghai) Co., Ltd has become a professional manufacturer of integration of research, production and selling for inverter and frequency conversion control system.The company has a professional and competent staff, devoting to the R&D of frequency conversion technology and the integration of application technology. It produces inverters special for elevator and escalator and high-performance universal vector type.