[Unimicron] Announcement regarding the acquisition of facility engineering services

1. Name and nature of the subject: Facility engineering. 2. Date of occurrence: 115/5/18~115/5/26. 3. Board approval date: N/A. 4. Other decision dates: Chairman approval, May 26, 115. 5. Transaction volume and total amount: One batch; total amount NT$355,810,000. 6. Counterparty and relationship: Li-Wei Technology Engineering Co., Ltd.; non-related party. 7. Reason for related party transaction: N/A. 8. Ownership history: N/A. 9. Profit/Loss: N/A. 10. Payment terms: Per order conditions. 11. Decision method: Negotiation based on market rates. 12-22. Professional appraisal: N/A. 23. Purpose: For production and operations. 24-31. Others: Not a related party transaction.