Yulong: Announcement by Subsidiary Zhejiang Yuzuan Precision Components Co., Ltd. on Self-Built New Factory Construction - Phase 1 Engineering Contract (Supplement to Announcement on April 20, 115)

1. Contract type: Self-built entrusted construction contract 2. Date of occurrence: 115/4/20~115/4/20 3. Date of Board of Directors' approval: January 21, 115 (Republic Era calendar) 4. Other approval dates: Not applicable 5. Counterparty to the contract and its relationship with the company: Counterparty: Zhejiang Zhongnan Construction Group Co., Ltd., non-related party. 6. Main content of the contract (including total contract amount, estimated amount to be invested, and contract start and end dates), restrictive clauses and other important agreements: The first phase of the engineering contract, with a total contract amount of RMB 39,200 thousand (RMB 35,963 thousand excluding tax). Restrictive clauses and other important agreements: None 7. Name of professional appraiser's firm or company and its appraisal results: Not applicable 8. Name of real estate appraiser: Not applicable 9. Real estate appraiser's license number: Not applicable 10. Specific purpose of acquisition: To meet future operational development plans and production capacity demands 11. Opinions of directors who expressed dissent to this transaction: None 12. This transaction is a related party transaction: No 13. Date of approval by supervisors or audit committee: January 21, 115 (Republic Era calendar) 14. Is the appraisal report for a limited price, specific price, or special price: No or not applicable 15. Is the appraisal report not yet obtained: No or not applicable 16. Reason for not yet obtaining appraisal report: Not applicable 17. If there is a significant difference in the appraisal results, the reason for the difference and the CPA's opinion: Not applicable 18. Name of accounting firm: Not applicable 19. Name of accountant: Not applicable 20. Accountant's license number: Not applicable 21. Date of previous significant announcement on the same matter: April 20, 115 (Republic Era calendar) 22. Other matters to be specified: The Board of Directors approved on January 21, 115 (Republic Era calendar) that the subsidiary, Zhejiang Yuzuan Precision Components Co., Ltd., plans to build a new factory through self-built entrusted construction within an untaxed amount of RMB 230,000 thousand.