On November 4, 2019, Yu Xiekang, secretary general of China Semiconductor Integrated Circuit Association and Chairman of Huajin Semiconductor, visited our company for investigation. Accompanied by chairman yu Jiazhen, Secretary General Yu had an in-depth understanding of the production process and technological equipment, and listened to the special work report. Yu Xiekang pointed out that the "craftsman spirit" should be applied to the research and development and production of new materials to achieve the replacement of import promotion.