CSC (1723) Invited to Participate in 'Puyu Index' Thematic Investor Conference

Announcement Date: 115/05/21 Statement Date: 115/05/20 Statement Time: 14:07:46 Company Code: 1723 Company Name: CSC (China Steel Chemical Corp) Subject: Announcement regarding the company's invitation to participate in the 'Puyu Index' thematic investor conference co-hosted by the Taiwan Stock Exchange and SinoPac Securities. Clause: Article 12 Fact Date: 115/05/22

Details: 1. Date of investor conference: 115/05/22 2. Time of investor conference: 14:50 3. Location of investor conference: Taiwan Stock Exchange (101 Building), 1st Floor, Information Exhibition Center 4. Key points of the investor conference: Primarily to explain the company's operational overview, financial status, and business performance to investors. 5. Other matters: None.

Please refer to the investor conference list or relevant sections on the Market Observation Post System (MOPS) for comprehensive financial and business information.