Huahai Qingke Co., Ltd. Progress Announcement on Repurchasing Company Shares Through Centralized Bidding Trading

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Security code: 688120 | Stock abbreviation: Hua Hai Qing Ke | Announcement No.: 2026-014

Hua Hai Qing Ke Co., Ltd.

Progress Announcement on Repurchasing Company Shares by the Company Using the Centralized Competitive Trading Method

The board of directors of the Company and all directors hereby guarantee that this announcement contains no false records, misleading statements, or material omissions, and assume legal responsibility for the truthfulness, accuracy, and completeness of the contents of this announcement.

Key Matters:

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Note: “The proportion of cumulative repurchased shares to the total share capital” is calculated based on the Company’s current total share capital of 353,651,991 shares.

I. Basic Information on the Share Repurchase

Hua Hai Qing Ke Co., Ltd. (hereinafter referred to as the “Company”) held the 17th meeting of the second session of the board of directors on August 28, 2025, and convened the 2025 third extraordinary general meeting of shareholders on September 16, 2025, during which it deliberated and approved the “Proposal on Repurchasing Company Shares by the Company Using the Centralized Competitive Trading Method.” The proposal agreed that the Company would repurchase some of the issued ordinary shares (A shares) of the Company in RMB through the centralized competitive trading method using its own funds and funds raised in excess of the amount, for the purpose of equity incentives or an employee shareholding plan, or for converting corporate bonds convertible into shares issued by the listed company. The total repurchase funds shall not be less than RMB 50M (inclusive) and not more than RMB 100M (inclusive). The repurchase share price shall not exceed RMB 173.00 per share (inclusive). The repurchase period shall not exceed 12 months from the date on which the shareholders’ meeting approves this share repurchase plan. For details, please refer to the Company’s disclosures on August 29, 2025 and September 19, 2025 on the website of the Shanghai Stock Exchange (www.sse.com.cn): “Preliminary Plan for Repurchasing Shares by the Company Using the Centralized Competitive Trading Method” (Announcement No.: 2025-055) and “Repurchase Report on Repurchasing Company Shares by the Company Using the Centralized Competitive Trading Method” (Announcement No.: 2025-063), respectively.

II. Progress of the Share Repurchase

In accordance with relevant regulations such as the “Rules for Repurchase of Shares by Listed Companies” and the “Self-Regulatory Guidelines for Listed Companies of the Shanghai Stock Exchange No. 7—Repurchase of Shares,” the Company shall disclose the repurchase progress as of the end of the previous month within the first three trading days of each month. The specific details of the Company’s share repurchase progress are hereby announced as follows:

As of March 31, 2026, the Company repurchased 441,120 shares of the Company through the trading system of the Shanghai Stock Exchange by the centralized competitive trading method, representing 0.1247% of the Company’s total share capital of 353,651,991 shares. The highest price of the repurchased shares成交 was 156.96 yuan per share, the lowest price was 127.30 yuan per share, and the total amount of funds paid was RMB 60,224,451.49 (excluding transaction commissions and other fees).

This share repurchase complies with relevant laws and regulations and the requirements of the Company’s share repurchase plan.

III. Other Matters

The Company will strictly comply with relevant regulations including the “Rules for Repurchase of Shares by Listed Companies” and the “Self-Regulatory Guidelines for Listed Companies of the Shanghai Stock Exchange No. 7—Repurchase of Shares,” and within the repurchase period, make and implement repurchase decisions in a timely manner based on market conditions. At the same time, it will promptly fulfill its information disclosure obligations in accordance with the progress of the repurchase of shares. Investors are kindly requested to pay attention to investment risks.

Announcement is hereby given.

Hua Hai Qing Ke Co., Ltd.

Board of Directors

April 2, 2026

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