Zhongchi Holdings: Announcement on the Resignation of Certain Directors, the Vice Chairman, and the Vice General Manager, and the Re-election of Directors and Appointment of the Financial Director

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Stock Code:

603903 Stock Abbreviation: Zhongchi Shares Announcement Number:

2026-012

Zhongchi Water Co., Ltd. on resignation of some directors, vice chairmen, and deputy general managers of the company

and the re-election of directors and appointment of financial director announcement

The company’s board of directors and all directors guarantee that the content of this announcement contains no false records, misleading statements, or major omissions, and assume legal responsibility for its authenticity, accuracy, and completeness.

1. Resignation of directors and senior management personnel

(1) Basic information on early resignation

NameResigned PositionResignation DateOriginal Term Expiry DateResignation ReasonWhether to continue serving in the listed company and its holding subsidiaries (if applicable)Specific Position (if applicable)Whether there are unfulfilled public commitments Tian Xiaohu Non-independent Director, Vice Chairman, and related positions in the Board’s special committeesApril 2, 2026January 19, 2028Personal reasonsNoNo Zhang Jun Non-independent Director and related positions in the Board’s special committeesApril 2, 2026January 19, 2028Personal reasonsNoNo Chen Yasong Non-independent DirectorApril 2, 2026January 19, 2028Personal reasonsNoNo Gao Zhiyong Non-independent Director and related positions in the Board’s special committeesApril 2, 2026January 19, 2028Personal reasonsYesGeneral ManagerNo Yu Zhengxin Non-independent DirectorApril 2, 2026January 19, 2028Personal reasonsYesDeputy General ManagerNo Zhou Yunlan Independent Director and related positions in the Board’s special committeesApril 2, 2026January 19, 2028Personal reasonsNoNo Xiang Yan Independent Director and related positions in the Board’s special committeesApril 2, 2026January 19, 2028Personal reasonsNoNo Ding Kai Deputy General ManagerApril 2, 2026January 19, 2028Personal reasonsNoNo

(2) Part 2: Impact of the resignation of some directors and vice chairmen on the company

Zhongchi Water Co., Ltd. (hereinafter referred to as “the Company”) received resignations from non-independent director, vice chairman Tian Xiaohu, non-independent directors Zhang Jun, Chen Yasong, Gao Zhiyong, Yu Zhengxin, and independent directors Zhou Yunlan and Xiang Yan on April 2, 2026. The specific details are as follows:

• Due to personal reasons, Mr. Tian Xiaohu resigned from his positions as non-independent director, vice chairman, and related roles in the Board’s special committees. After resignation, he will no longer hold any position in the company.

• Due to personal reasons, Mr. Zhang Jun resigned from his positions as non-independent director and related roles in the Board’s special committees. After resignation, he will no longer hold any position in the company.

• Due to personal reasons, Mr. Chen Yasong resigned from his position as non-independent director. After resignation, he will no longer hold any position in the company.

• Due to personal reasons, Mr. Gao Zhiyong resigned from his positions as non-independent director and related roles in the Board’s special committees. After resignation, he will still serve as the company’s General Manager.

• Due to personal reasons, Mr. Yu Zhengxin resigned from his position as non-independent director. After resignation, he will still serve as the company’s Deputy General Manager.

• Due to personal reasons, Ms. Zhou Yunlan resigned from her positions as independent director and related roles in the Board’s special committees. Because of her resignation, the number of independent directors will fall below the minimum required by the Articles of Association, some committee compositions will not meet relevant regulations, and the Audit Committee lacks an accounting professional to serve as convener. Therefore, her resignation will take effect after the company’s shareholders’ meeting elects a new independent director.

• Due to personal reasons, Ms. Xiang Yan resigned from her positions as independent director and related roles in the Board’s special committees. Because of her resignation, the number of independent directors will fall below the minimum required by the Articles of Association, and some committee compositions will not meet relevant regulations. Her resignation will take effect after the shareholders’ meeting elects a new independent director.

According to the “Company Law” and other laws and regulations, as well as the Articles of Association, the resignations of Mr. Tian Xiaohu, Mr. Zhang Jun, Mr. Chen Yasong, Mr. Gao Zhiyong, and Mr. Yu Zhengxin will take effect upon receipt by the Board. The resignations of Ms. Zhou Yunlan and Ms. Xiang Yan will take effect after the company’s shareholders’ meeting elects new independent directors. Although the resignations of these directors reduce the number of board members below the statutory minimum, the company held a staff representative meeting on the same day to elect Mr. Gao Zhiyong as the fourth session of the company’s staff representative director, with a term from the date of election until the end of the fourth session of the board. Therefore, these resignations will not affect the normal operation of the company’s board or daily business.

As of the date of this announcement, except for Mr. Yu Zhengxin, who holds 392,000 shares of the company, the other directors do not hold any shares. None of the above directors have unfulfilled public commitments. The company’s board of directors sincerely thanks these directors for their contributions during their tenure!

Part 2: Impact of the resignation of the Deputy General Manager on the company

On [Month] [Day], 2026, the company’s board received Mr. Ding Kai’s resignation letter. Due to personal reasons, Mr. Ding Kai resigned from his position as Deputy General Manager, effective upon receipt by the board. After resignation, he will hold no position in the company.

As of the date of this announcement, Mr. Ding Kai does not hold any shares in the company and has no unfulfilled public commitments. The board of directors sincerely thanks Mr. Ding Kai for his contributions during his tenure!

Part 3: Re-election of directors

On April 2, 2026, the company held the eighth meeting of the fourth session of the board of directors, which approved the “Proposal on Re-electing Directors of the Fourth Session of the Board.” The company’s controlling shareholder, Jiangsu Xin Changzheng Microelectronics Group Co., Ltd., nominated Mr. Zhu Yangjun, Mr. Chen Shouzhi, Mr. Su Jiang, and Mr. Deng Xiaoshe as non-independent director candidates for the fourth session of the board, and Ms. Sun Lin and Mr. Han Zhensheng as independent director candidates. The independence and qualification of the independent directors must be approved by the Shanghai Stock Exchange. Their term is from the date of approval at the first extraordinary general meeting in 2026 until the end of the fourth session of the board. The candidates’ resumes are detailed in the company’s materials for the first extraordinary general meeting in 2026.

Part 4: Appointment of the Chief Financial Officer

On [Month] [Day], 2026, the company held the eighth meeting of the fourth session of the board of directors, which approved the “Proposal on Appointing the Company’s Financial Director.” The company’s General Manager, Mr. Gao Zhiyong, nominated Ms. Jiang Yalin to serve as the company’s financial director, with a term from the date of approval at this meeting until the end of the fourth session of the board. This proposal was reviewed and approved by the company’s Nomination Committee and Audit Committee before being submitted to the board. Ms. Jiang Yalin’s resume is attached.

This announcement is hereby made.

Board of Directors of Zhongchi Water Co., Ltd.

April 2, 2026

Attachments:

Resume of Ms. Jiang Yalin: Jiang Yalin, female, born in 1989, Chinese nationality, master’s degree, no permanent residence abroad. From November 2014 to April 2026, served as the company’s securities affairs representative and regional financial director for the Yangtze River Delta.

As of the date of this announcement, Ms. Jiang Yalin holds 19,600 shares of the company, has no relation to the company’s controlling shareholder, actual controller, shareholders holding more than 5%, or current directors and senior management. She does not have any circumstances that prohibit her from serving as a senior management member under the “Company Law,” “Shanghai Stock Exchange Stock Listing Rules,” or the Articles of Association. She has not been subject to any penalties or disciplinary actions by the China Securities Regulatory Commission or the stock exchange.