EST launched a convertible bond fundraising project of 620 million yuan in March 2023, with a plan to add to its production capacity another 1.5 million pieces of precision cutting tools for the high-end, intelligent and low-carbon markets. It obtained the registration approval from the China Securities Regulatory Commission (CSRC) on December 18. The bond, abbreviated as "FengGong ZhuanZhai" (EST Convertible Bond) with a code number of 123239, was issued on January 19, 2024 and listed on the Shenzhen Stock Exchange on February 22.