【Chang Yuan】Announcement that the Board of Directors approved the extension of endorsement and guarantee limits for its subsidiary, Wuxi Chang Yuan Metal Products Co., Ltd. (Chang Yuan Wuxi)

1. Date of occurrence of the event: 2026/05/08 2. The endorsed/guaranteed entity: (1) Company name: Wuxi Chang Yuan Metal Products Co., Ltd. (2) Relationship with the company providing endorsement/guarantee: A company in which the Company indirectly invests 100% in Mainland China through a third country. (3) Endorsement/guarantee limit (in thousands NTD): 2,408,216 (4) Original outstanding balance of endorsement/guarantee (in thousands NTD): 791,500 (5) Amount of new endorsement/guarantee (in thousands NTD): 348,260 (6) Outstanding balance of endorsement/guarantee as of the date of occurrence (in thousands NTD): 1,139,760 (7) Actual utilized amount by the endorsed/guaranteed company (in thousands NTD): 77,503 (8) Reason for the new endorsement/guarantee: Renewal of short-term bank financing facilities upon maturity and extension for one year. 3. Collateral provided by the endorsed/guaranteed company: (1) Content: None. (2) Value (in thousands NTD): 0 4. Latest financial statement of the endorsed/guaranteed company: (1) Capital (in thousands NTD): 1,680,898 (2) Accumulated profit/loss (in thousands NTD): 372,386 5. Conditions for lifting endorsement/guarantee responsibility: (1) Conditions: None. (2) Date: None. 6. Total limit of endorsement/guarantee (in thousands NTD): 2,408,216 7. Outstanding balance of endorsement/guarantee as of the date of occurrence (in thousands NTD): 1,139,760 8. Ratio of outstanding balance of endorsement/guarantee to the net worth of the public offering company's latest financial statement as of the date of occurrence: 0.23 9. Ratio of the sum of outstanding balance of endorsement/guarantee, long-term investments, and loans to others to the net worth of the public offering company's latest financial statement as of the date of occurrence: 0.69 10. Other matters to be specified: The exchange rate for the above amounts (in thousands NTD) is based on the Taiwan Bank's closing exchange rate at the end of April 2026: USD 1: 31.660; RMB 1: 6.8628.