6239 Powertech to Establish Panel-Level Advanced Packaging Joint Venture with Broadcom in Singapore

Announcement Date: July 17, 2026 Statement Date: July 16, 2026 Statement Time: 18:05:38 Company Code: 6239 Company Name: Powertech Technology Inc. Subject: Announcement of Proposed Joint Venture with Broadcom Technologies, Inc. in Singapore for Panel-Level Advanced Packaging Manufacturing Applicable Clause: Clause 15 Factual Date: July 16, 2026 Details: 1. Board or Shareholders' Meeting Resolution Date: July 16, 2026 2. Investment Plan: Jointly establishing a manufacturing joint venture in Singapore with Broadcom Technologies, Inc. focused on panel-level advanced packaging services. 3. Planned Investment Amount: USD 400 million 4. Planned Investment Date: Investment will be made according to the timeline of factory establishment and funding requirements in Singapore 5. Source of Funds: Company's own funds 6. Specific Purpose: To enhance the company’s overall international business layout and to be closer to the global customer supply chain 7. Other Matters to be Disclosed: The actual completion timeline, final transaction terms, and subsequent execution of this joint venture remain subject to regulatory approvals, execution and effectiveness of relevant agreements, fulfillment of prerequisite conditions, and other necessary procedures. The company will make timely announcements and filings on the Public Information Observation Station in accordance with applicable laws and regulatory requirements.