PCB Tech Corrects Private Placement Disclosure: Must Report Within Two Days of Board Resolution

1. Factual Date: 115/06/23 2. Company Name: PCB Tech Co., Ltd. 3. Relationship with Company (Enter '本公司' or 'Subsidiary'):本公司 4. Cross-shareholding Ratio: NA 5. Reason for Occurrence: Correction of (1) whether subscribers include insiders or related parties; (2) information on the use of proceeds and expected benefits from the private placement 6. Item/Report Name to be Corrected: Correction of (1) whether subscribers include insiders or related parties; (2) information on the use of proceeds and expected benefits from the private placement 7. Information Before Correction / Amount / Content / Page: (1) Whether subscribers include insiders or related parties: Yes (2) Use of proceeds and expected benefits from the private placement: The funds raised will be used to strengthen working capital and repay bank loans, expected to reduce interest expenses, improve financial structure, and enhance future operational performance, providing positive and substantial benefits to shareholders. 8. Information After Correction / Amount / Content / Page: (1) Whether subscribers include insiders or related parties: No (2) Use of proceeds and expected benefits from the private placement: The funds raised will be used to strengthen working capital and repay bank loans, with benefits expected to be achieved 'in phases'—reducing interest expenses, improving financial structure, and enhancing future operational performance—providing positive and substantial benefits to shareholders. 9. Countermeasures: NA 10. Other Matters to be Disclosed: None