1717 Chang Hsin Engineering Co., Ltd.

Announcement Date: June 23, 115 Statement Date: June 22, 115 Statement Time: 17:02:18 Company Code: 1717 Company Name: Chang Hsin Engineering Co., Ltd. Subject: Announcement of the benchmark date for the company's cash capital increase in year 115 (Supplement: Issuance price per share, financial institutions for collection and escrow accounts) Applicable Clause: Clause 11 Factual Date: June 22, 115

Details: 1. Board resolution or company decision on capital increase benchmark date: May 27, 115 2. Whether a blanket filing for new share issuance was adopted (if yes, specify the planned issuance period; if no): No 3. Regulatory authority approval effective date: May 8, 115 4. Board resolution (supplementary) issuance date: March 13, 115 5. Total issuance amount and number of shares: (1) Total issuance amount: NT$120,000 thousand (2) Number of shares issued: 12,000 thousand ordinary shares 6. For blanket filing new share issuance cases, the amount and number of shares issued this time: Not applicable 7. For blanket filing new share issuance cases, the remaining amount and number of shares after this issuance: Not applicable 8. Par value per share: NT$10 9. Issuance price: NT$50 per share 10. Employee subscription shares: 1,800 thousand shares (15% of total new shares) allocated for employee subscription 11. Existing shareholder subscription ratio: 9,000 thousand shares (75% of total new shares) offered to existing shareholders based on their holdings as recorded in the shareholder register on the subscription benchmark date, with 7.6775727 shares per 1,000 shares held 12. Public offering method and number of shares: 1,200 thousand shares (10% of total new shares) offered publicly through underwriting 13. Handling of fractional shares and unclaimed shares: Fractional shares less than one share arising from existing shareholders' subscriptions may be consolidated into full shares by shareholders directly applying to the company's share agent within five days from the start of the share transfer suspension period. Any remaining fractional shares, unclaimed shares, or shares not consolidated on time by shareholders or employees may be authorized to be subscribed by designated persons at the issuance price by the Chairman. 14. Rights and obligations of the newly issued shares: Same as existing issued ordinary shares 15. Use of proceeds from this capital increase: Repayment of the 110th-year first series of secured corporate bonds and bank loans 16. Cash capital increase subscription benchmark date: July 5, 115 17. Last transfer date: June 30, 115 18. Share transfer suspension start date: July 1, 115 19. Share transfer suspension end date: July 5, 115 20. Share payment period: - For existing shareholders and employees: July 13, 115 to July 17, 115 - For designated persons: July 20, 115 to July 21, 115 21. Contract signing date with financial institutions for collection and escrow accounts: June 22, 115 22. Entrusted institutions for collection and escrow: (1) For existing shareholders and employees: Taishin International Commercial Bank, Lingya Branch (2) For public underwriting: Taishin International Commercial Bank, Dunan Branch 23. Entrusted institution for escrow: Yuanta Commercial Bank, Kaohsiung Branch 24. Other matters to be stated: (1) The issuance of 12,000 thousand ordinary shares with a par value of NT$10 per share has been approved effective by the Financial Supervisory Commission under reference number JGJ-1150341657 dated May 8, 115 (2) Any revisions to the issuance amount, number of shares, price, schedule, conditions, total funding, fund utilization plan, funding sources, expected utilization progress, anticipated benefits, or related matters due to regulatory instructions, legal amendments, financial market conditions, operational assessments, or changes in objective circumstances shall be fully authorized to the Chairman (3) Any unaddressed matters related to this cash capital increase shall be fully authorized to the Chairman