3033 Weikeng: Additional Endorsement Guarantees Exceeding NT$30 Million and 5% of Net Equity

Announcement Date: July 14, 2026 Statement Date: July 13, 2026 Statement Time: 14:26:30 Company Code: 3033 Company Name: Weikeng Subject: The company has added endorsement guarantees exceeding NT$30 million and 5% of its latest financial statement net equity Applicable Clause: Clause 22 Factual Date: July 13, 2026

Explanation: 1. Factual Date: 07/13/2026

2. Information on Endorsed Companies: (1) Company Name: Weikeng International Co., Ltd. (WKI) (2) Relationship with Guarantee Provider: Parent-Subsidiary (3) Endorsement Guarantee Limit (in thousand NTD): 15,974,337 (4) Previous Endorsement Guarantee Balance (in thousand NTD): 10,332,950 (5) Amount of New Endorsement Guarantee (in thousand NTD): 321,500 (6) Endorsement Guarantee Balance as of Factual Date (in thousand NTD): 10,654,450 (7) Actual Drawdown Amount by Endorsed Company (in thousand NTD): 8,076,872 (8) Reason for New Guarantee: Due to operational funding needs of subsidiary WKI, WKI applied for financing facilities (renewal + new agreement) from Taichung Bank. The bank required Weikeng Industrial Co., Ltd., the parent company, to provide a guarantee for the subsidiary, resulting in an increase in endorsement guarantee amount.

(1) Company Name: WEIKENG TECHNOLOGY PTE LTD. (WTP) (2) Relationship with Guarantee Provider: Parent-Subsidiary (3) Endorsement Guarantee Limit (in thousand NTD): 15,974,337 (4) Previous Endorsement Guarantee Balance (in thousand NTD): 1,221,700 (5) Amount of New Endorsement Guarantee (in thousand NTD): 578,700 (6) Endorsement Guarantee Balance as of Factual Date (in thousand NTD): 1,800,400 (7) Actual Drawdown Amount by Endorsed Company (in thousand NTD): 992,637 (8) Reason for New Guarantee: Due to operational funding needs of subsidiary WTP, WTP applied for financing facilities (renewal + new agreement) from HSBC and others. The bank required Weikeng Industrial Co., Ltd., the parent company, to provide a guarantee for the subsidiary, resulting in an increase in endorsement guarantee amount.

3. Collateral Provided by Endorsed Companies: (1) Description: None (2) Value (in thousand NTD): 0

4. Latest Financial Statements of Endorsed Companies: (1) Capital (in thousand NTD): 2,506,772 (2) Accumulated Profit/Loss (in thousand NTD): 5,653,175

5. Conditions for Release of Endorsement Liability: (1) Conditions: The endorsement liability will be released when the credit agreement between the subsidiary and the bank expires, there are no outstanding loans, and the agreement is not renewed. (2) Dates: Release Dates: May 2026 - USD38,500,000.00 / NTD500,000,000 June 2026 - USD10,000,000.00

6. Total Endorsement Guarantee Limit (in thousand NTD): 31,948,674

7. Total Endorsement Guarantee Balance as of Factual Date (in thousand NTD): 17,097,020

8. Ratio of Endorsement Guarantee Balance to the Latest Financial Statement Net Equity of the Public Company as of Factual Date: 160.54%

9. Combined Ratio of Endorsement Guarantees, Long-Term Investments, and Fund Lending to the Latest Financial Statement Net Equity of the Public Company as of Factual Date: 160.54%

10. Other Disclosures: WKI Capital: 2,171,313 thousand NTD, WKI Accumulated Profit/Loss: 5,512,109 thousand NTD WTP Capital: 335,459 thousand NTD, WTP Accumulated Profit/Loss: 141,066 thousand NTD The board of directors has already approved the new agreements (renewals of existing agreements), resulting in overlapping bank endorsement guarantee limits before the old agreements expire. The overlapping amounts are as follows: WKI: 803,750 thousand NTD (matures July 2026: NTD160,750 thousand, August 2026: NTD385,800 thousand, October 2026: NTD257,200 thousand) WTP: 160,750 thousand NTD (matures August 2026: NTD64,300 thousand, October 2026: NTD96,450 thousand) WKS: 661,780 thousand NTD (matures July 2026: NTD330,890 thousand, September 2026: NTD330,890 thousand)