In the afternoon of April 13, Yu Shurong led Liu Quan'en, director of the alumni association of Lanzhou University of Technology, and members of the fluid sealing research team of the Petrochemical Institute to Hefei Shuangfeng Zhigu Innovation and Entrepreneurship Science Park for investigation and exchange. I visited Anhui Huaxia High tech Development Co., Ltd. on site, visited relevant testing laboratories, and had in-depth exchanges with Li Huan, the chairman of our company and the 85 level alumnus of the school's chemical machinery, laying the foundation for subsequent scientific research cooperation between schools and enterprises.