The first echelon; Shanghai Electric Machine Factory Xiangtan Electric Machine Factory Harbin Electric Dongfang Electric (large state-owned enterprise)
The second echelon: CLP Motor Wolong Motor Jiamusi Motor (a large listed company)
The third echelon: Wannan Motor Jiangte Motor Xima Motor Volkswagen Motor Ying Long Motor (private enterprise)
Besides, there are many other brands of motors, such as Zhong Da Motor, Changsha Motor, Hengshui Motor and Pinxing Motor.
The quality of the above brands is relatively stable and reliable, and each has its own advantages. I hope my answer can help you!