Quanta's US Subsidiary Leases Factory Facility in Fremont

This announcement concerns the acquisition of right-of-use assets for factory premises by our subsidiary, Quanta Manufacturing Nashville, LLC.

1. Target Property: Right-of-use asset for factory premises (Located in Fremont, California, USA) 2. Date of Occurrence: May 19, 2026 3. Transaction Details: - Area: Approximately 203,414 square feet - Average Monthly Rent: Approximately $514,000 USD - Lease Term: 10 years - Total Rent Amount: Approximately $46,265,000 USD - Total Contract Amount: Approximately $61,710,000 USD (equivalent to approximately $1,974,408,000 TWD) 4. Counterparty: Prologis, L.P., a Delaware limited partnership (Not a related party) 5. Decision Basis: Based on valuation reports from Capto Advisors LLC and Spring Valuation Advisors, followed by negotiation and authorized approval. 6. Purpose of Transaction: To meet the company's operational requirements.