At 3:50 p.m. on May 19, the technology department invited Mr. Zhang Baogen of Beijing Daluhangxing Quality Certification Center to conduct the first training on the certification of three systems (quality management system, environmental management system and occupational health and safety management system) for our company. The company's leaders and relevant personnel such as technology, production, quality inspection, safety and environment, procurement, sales and personnel participated in the training. The training adopts various forms such as knowledge explanation, case analysis and interactive Q&A, so that the participants have a more comprehensive understanding of the three system certification, which points out the ideas and lays the foundation for the follow-up three system certification work.