On August 8 to 10, by the assistance of Xinjiang Uygur Autonomous quality supervision, Xian sub-centre hold the training course of "3C authentication in-assessment officer" of low voltage packages enterprises in Xinjiang. 98 representatives from more than 80 enterprises from five northwestern provinces which product the low voltage sets participated in the training. The course invites two teachers who teach the "low voltage sets enterprise certification engineers" developed training courses, two teachers of and electrical distribution equipment for the detection of the chief engineer of Tianjin, and deputy chief engineer Chenxuemei and Chinese household appliances Lizhulin at the Institute gave the lecture. The training included quality assurance capabilities for understanding and the quality of internal audit; Low-voltage switching equipment package product design, machining standards and testing technology requirements and key components, such as the purchase of spare parts and regular testing confirmed test requirements. All the teachers prepared their curriculum very well, and the detailed examples deepened the understanding of participants; the classroom atmosphere is very active, usually have a lively discussion from time to time. After the ending of the training, the participants all indicated that they have benefited a lot from the systematic study and mastered the points of low voltage package product certification process, and this cleared away the obstacles in aplicationg for 3C certification in the future.