On May 27, Holsin's securities abbreviation (603909.SH) was officially renamed "C&D Holsin" while the securities code "603909" remained unchanged. 

According to the announcement of the Company, the renaming was mainly based on its strategy, business and future development needs, to reflect the relationship between the Company and its controlling shareholders and strengthen the brand effect of the listed company. 

At the end of 2021, Xiamen Yiyue, a wholly-owned subsidiary of C&D International (01908.HK), acquired 29.01% of Holsin, becoming the largest single shareholder of Holsin and gaining the right of control. Since then, Holsin has become a member of C&D System.