The quality assurance system of longhui electric machinery takes the quality system as the center and runs through every process of the product, such as: customer requirements identification, product development and design, product performance verification, process tooling design, process tooling verification, process capability research, measurement capability research, purchasing material management, product delivery management, customer follow-up service, etc., and will control the feedback in the theory Assessment technology is applied to these processes in a comprehensive and effective way to form a complete and effective quality assurance system, so as to ensure that longhui motor can provide the same outstanding motor products for every customer.