On February 3, 2021, East China Engineering Science and Technology Co., Ltd. signed the three-party strategic cooperation agreement with Beijing Qingchuang Jinhua Technology Co., Ltd. and Shanxi Yangmei Chemical Machinery (Group) Co., Ltd. The three parties will join hands to enter the field of industrial gases, and will further deepen all-round cooperation and exchanges in resource utilization, business integration, and full-process services, etc., realize complementary advantages, information sharing, mutual benefit and win-win, improve the level and standard of strategic coordination, and achieve a new leap in strategic development.