Securities Code: 300737 Bond Code: 123216 Securities Abbreviation: Keshun Shares Bond Abbreviation: Keshun Convertible Bond Announcement No.: 2026-014 Keshun Waterproof Technology Co., Ltd. Announcement on Estimated Routine Related Party Transactions The Company and all members of the Board of Directors guarantee the truthfulness, accuracy, and completeness of the information disclosed, and that there are no false records, misleading statements, or major omissions. Keshun Waterproof Technology Co., Ltd. (hereinafter referred to as the "Company") held the 20th meeting of the Fourth Board of Directors on April 23, 2026, and reviewed and approved the "Proposal on the Estimated Routine Related Party Transactions of the Company." Related Directors Chen Weizhong, Fang Yong, and Bi Shuangxi abstained from voting on this proposal. The validity period of this estimated routine related party transaction matter shall be from the date of review and approval by this Board meeting until the date of review and approval of the proposal on estimated routine related party transactions for the next year. The above proposal was reviewed and approved by the Independent Directors' Special Committee before being submitted to the Board of Directors for review, and was unanimously approved by the independent directors. In accordance with Articles 7.2.7, 7.2.8, and 7.2.17 of the "Listing Rules of the Shenzhen Stock Exchange ChiNext Market," this proposal does not need to be submitted to the shareholders' meeting for review. The specific situation is as follows: I. Basic Information on Routine Related Party Transactions (I) Overview of Routine Related Party Transactions The routine related party transactions expected to occur are: (1) the Company leasing office space and other properties from Ms. Ruan Yibao, one of the controlling shareholders and actual controllers; (2) controlling shareholder Chen Weizhong and his related parties providing guarantees for the Company's bank credit facilities; (3) the Company and its consolidated subsidiaries engaging in routine related party transactions with Guangdong Keshun Gaojie Construction Investment Co., Ltd. (hereinafter referred to as "Keshun Gaojie") in terms of sales and purchases of products; (4) the Company and its consolidated subsidiaries engaging in routine related party transactions with Saint-Gobain Keshun New Materials Co., Ltd. (hereinafter referred to as "Saint-Gobain Keshun") in terms of sales and purchases of products. The estimated situation is as follows: Unit: Ten Thousand Yuan
| Related Party Transaction Category | Related Party | Transaction Content | Pricing Principle | Contracted Amount or Estimated Amount | 2025 Annual Expense Amount |
|---|---|---|---|---|---|
| Lease of Properties | Ruan Yibao | Lease of Properties | Market Price | 76.23 | 65.34 |
| Loan Guarantee | Chen Weizhong and related parties | Guarantee for Company's bank credit facilities | No consideration required | 1,000,000.00 | 195,542.27 |
| Related Party Transaction | Keshun Gaojie | Sales and purchase of products | Market Price | 1,000.00 | 0.51 |
| Related Party Transaction | Saint-Gobain Keshun | Sales and purchase of products | Fair Market Price | 10,000.00 | 569.28 |
| Total | 1,011,076.23 | 196,177.40 | |||
| (II) Actual Occurrence of Routine Related Party Transactions in the Previous Year | |||||
| In 2025, the Company's estimated routine related party transactions with related parties were 1,011,076.23 ten thousand yuan, and the actual occurrence was 193,203.18 ten thousand yuan. The spe |