From October to December 2020, the group invited Professor Xie Kejian, a lean production expert, consulting advisor for AbbVie, and authorized training instructor for Toyota, to teach the course "Lean Operations and Lean Management". Group President Chen Xingfu, Vice President Sun Yajun, and two key production and management personnel from the company participated in the training. The training covers aspects such as production planning, supply chain management, manufacturing management, quality management, on-site improvement, and on-site human resource management. Refined management is a comprehensive management model that integrates refined management ideas and styles into all aspects of enterprise work. This model leads refined management work to deeper levels, such as work attitude, work style, professional quality, and professional ethics; At the same time, it is necessary to combine the construction of the company's corporate culture, creatively carry out refined management work, gradually change employees' work attitudes and methods, improve their professional quality and ethics, change the company's management mode, and adapt to the requirements of modern enterprise management. In this training, the backbone of the group's production business actively participated in interaction, diligently thought and summarized, and achieved good results.