3715 Ding Ying Investment Holding Announces Board Approval for Subsidiary Chaoying Electronics to Apply for Listing on Hong Kong Stock Exchange

Release Date: July 7, 115 Statement Date: July 6, 115 Statement Time: 17:41:16 Company Code: 3715 Company Name: Ding Ying Investment Holding Subject: Announcement of Board Approval for Subsidiary Chaoying Electronics Circuit Co., Ltd. to Apply for Listing on the Hong Kong Stock Exchange Applicable Clause: Clause 50 Factual Date: July 6, 115

1. Board Meeting Date: July 6, 115 2. Shareholders' Meeting Date: Scheduled for September 2, 115 3. Name of Subsidiary Applying for Overseas Listing: Chaoying Electronics Circuit Co., Ltd. (hereinafter referred to as "Chaoying Electronics")

4. Purpose of Applying for Overseas Listing: To broaden the international financing channels for Chaoying Electronics, a subsidiary of the company, enhance its global brand image and reputation, meet the needs of its international business expansion, and further advance its globalization strategy.

5. Impact of Overseas Listing on the Company's Financial and Business Operations: (1) Financial Impact: 1. If Chaoying Electronics successfully lists on the Hong Kong Stock Exchange, the net proceeds raised will primarily be used for capacity expansion and upgrades at its Thailand and Huangshi plants, R&D investments, working capital supplementation, and general corporate purposes. Once funds are secured, production lines can be expanded to increase capacity, strengthen business competitiveness, and enhance group profitability and shareholder equity. 2. The listing will provide a more efficient fundraising environment for Chaoying Electronics’ future operational and capital expenditure needs, optimize the financial structure of the corporate group, and reduce financial costs. 3. It will increase the total assets and net asset scale of the corporate group, further strengthen its capital base, and better pursue maximum benefits for shareholders. 4. From a shareholding structure perspective, the company will continue to maintain substantive control over Chaoying Electronics through its wholly-owned domestic investment entity Ding Ying Electronics Co., Ltd., which holds Wintek (MAURITIUS) Co., Ltd., which in turn holds Dynamic Electronics Holding Pte. Ltd. in Singapore, ensuring continued control.

(2) Business Impact: Chaoying Electronics is a professional printed circuit board (PCB) manufacturing service provider, engaged in the research, development, production, and sales of PCBs. Its products are currently used in electric vehicles, ADAS, storage devices, servers, and networking products. The listing and fundraising will enhance Chaoying Electronics’ R&D and production capabilities, strengthen its international competitiveness in high-end and AI-related PCB fields, further increase market share, and boost group profitability. Listing Chaoying Electronics in Hong Kong will also enhance the international image of the corporate group, attract top talent, ensure stability of core employees, and strengthen employee loyalty, thereby enhancing human resource advantages for business expansion and improving the group’s development prospects.

6. Planned Organizational and Business Adjustments: None

7. Impact of Organizational and Business Adjustments: (1) The company will continue to hold Chaoying Electronics through its overseas subsidiaries Wintek (MAURITIUS) Co., Ltd. and Dynamic Electronics Holding Pte. Ltd. The organizational structure of Chaoying Electronics and its subsidiaries will remain unchanged, thus having no impact on the company’s investment structure. (2) As Chaoying Electronics will not adjust its organizational structure or business nature, the listing and fundraising will enhance corporate value, bringing positive long-term benefits to the company’s stable development.

8. Method of Equity Dilution and Expected Reduction in Ownership Ratio: Chaoying Electronics plans to list on the Hong Kong Stock Exchange with a par value of RMB 1 per share. According to local regulations, the number of new shares issued will not exceed 15% of the total post-IPO share capital, with an over-allotment option of up to 15% of the initial offering granted to the lead underwriter. However, the final listing exchange and issuance size will be determined by the board of directors of the company and/or Chaoying Electronics, or their authorized representatives, upon shareholders’ approval, based on Hong Kong laws, funding needs, communication with HKEX, and market conditions in consultation with the lead underwriter.

9. Basis for Pricing: The offering price will be determined in accordance with the HKEX listing rules, Hong Kong laws, and other regulatory requirements. The final listing exchange, board, issuance size, public float ratio, and offering price will be determined by the company’s board and/or Chaoying Electronics’ board, or their authorized representatives, based on local laws, funding needs, regulatory communications, and market conditions, in consultation with the lead underwriter.

10. Equity Recipients or Specific Parties Engaged: The new shares will be offered to qualified institutional and retail investors meeting the requirements under HKEX listing rules and Hong Kong laws.

11. Impact on the Company’s Continued Listing: The application by Chaoying Electronics to list on HKEX will comply with HKEX rules, Hong Kong laws, and other regulations. The company will retain control over Chaoying Electronics through its existing investment structure, and Chaoying Electronics will remain a controlled subsidiary. Shareholder interests will be fully protected; thus, the company’s listing on the Taiwan Stock Exchange will not be affected.

12. Date of Review by Special Committee (or Audit Committee) on Matters (Items 4 to 11): July 6, 115

13. Other Matters to be Disclosed: (1) Considering Chaoying Electronics’ long-term development, the company plans to apply to HKEX, but no formal application has been submitted yet. The timing and duration of the future application remain uncertain and unpredictable. (2) Following board approval, the company intends to seek shareholder approval to authorize its board or authorized persons, and/or Chaoying Electronics’ board or authorized persons, to fully manage all matters related to the listing, including but not limited to appointing professional advisors, determining issuance terms, timing, size, objects, methods, pricing (including price range and final price), benchmark date, strategic placement (if any), fund usage, issuing commitment letters, and handling all related procedures, based on implementation progress, regulatory feedback, market conditions, and applicable laws. (3) The listing will proceed only if compliant with HKEX listing rules, Hong Kong laws, TWSE regulations, and other applicable requirements, and subject to approvals, filings, consents, or authorizations from relevant authorities including CSRC, SFC, and HKEX.