Securities code: 688002 Securities abbreviation: Ruichuang Micro-Nano Announcement No.: 2025-010

Yantai Ruichuang Micro-Nano Technology Co., Ltd

Announcement on the progress of share repurchase

The board of directors and all directors of the company guarantee that there are no false records, misleading statements or material omissions in the content of this announcement, and assume legal responsibility for the authenticity, accuracy and completeness of its content.

Important Content Notes:

The repurchase plan was first disclosed on April 23, 2024

The implementation period of the buyback plan is 12 months after the approval of the board of directors

The estimated repurchase amount is 10,000,000 yuan ~ 20,000 yuan

□ reduce the registered capital

Buyback Purpose √ for employee stock ownership plans or equity incentives

□ is used to convert the company's convertible bonds

□ to maintain the company's value and shareholders' rights

The cumulative number of repurchased shares is 2,282,700 shares

Cumulative number of repurchased shares to total share capital 0.50%

The cumulative amount repurchased is 73.1468 million yuan

The actual repurchase price range is 23.77 yuan/share~51.00 yuan/share

1. The basic situation of the repurchase of shares

Yantai Ruichuang Micro-Nano Technology Co., Ltd. (hereinafter referred to as the "Company") was convened on April 22, 2024

At the 15th meeting of the third session of the board of directors, the "Proposal on the Plan for Repurchasing the Company's Shares by Centralized Bidding Transaction" was deliberated and approved, and it was agreed that the company should use its own funds to repurchase the company's shares in a centralized bidding transaction, and the total amount of repurchase funds shall not be less than RMB 100 million (inclusive) and not more than RMB 200 million (inclusive); The repurchase price is not higher than 50 yuan per share (inclusive), and the repurchase period is from the board of directors to review and approve the share repurchase plan

within 12 months from the date of the date. For details, please refer to the company's website on the Shanghai Stock Exchange on April 23, 2024

(www.sse.com.cn) The "Plan on Repurchasing Shares by Centralized Auction Transaction" (Announcement No.: 2024-033) disclosed by the disclosure.

Due to the company's implementation of the 2023 annual equity distribution, the share price will be repurchased in a centralized auction transaction

The upper limit of the grid is adjusted from no more than 50.00 yuan per share (inclusive) to no more than 49.88 yuan per share (inclusive). For details, please refer to the public

On June 26, 2024, the Company disclosed on the website of the Shanghai Stock Exchange (www.sse.com.cn).

Announcement on the Adjustment of the Price Cap of Repurchased Shares for the 2023 Annual Equity Distribution (Announcement No.: 2024-056).

Due to the company's implementation of the 2024 semi-annual equity distribution, the upper limit of the price of shares repurchased by centralized auction transaction will be adjusted from no more than 49.88 yuan per share (inclusive) to no more than 49.83 yuan per share (inclusive). For details, please refer to it

On October 29, 2024, the Company disclosed on the website of the Shanghai Stock Exchange (www.sse.com.cn) the "About

Announcement on the Implementation of the 2024 Half-Year Equity Distribution Adjustment of the Price Cap of Repurchased Shares (Announcement No. 2024-090).

On January 6, 2025, the company held the 21st meeting of the third board of directors and deliberated and approved the "Guan

In the proposal to adjust the upper limit of the price of repurchased shares, it was agreed to adjust the price of the repurchased company's shares from no more than 49.83 yuan per share (inclusive) to no more than 72.00 yuan per share (inclusive), which is not higher than 150% of the average trading price of the company's shares in the 30 trading days before the board of directors deliberated and passed the resolution on adjusting the upper limit of the price of repurchased shares. In addition to the above adjustments, there are no other changes to the company's share repurchase plan. For details, please refer to the "Announcement on Adjusting the Upper Limit of the Price of Repurchased Shares" (Announcement No.: 2025-005) disclosed by the Company on the website of the Shanghai Stock Exchange (www.sse.com.cn) on January 7, 2025.

2. Progress of share repurchases

According to the Rules for Share Repurchase of Listed Companies, the Self-Regulatory Guidelines for Listed Companies on the Shanghai Stock Exchange No. 7 - Share Repurchase and other relevant regulations, the company shall disclose the progress of the repurchase as of the end of the previous month within the first three trading days of each month during the repurchase of shares. The progress of the company's share repurchase is hereby announced as follows:

In January 2025, the company repurchased a total of 168,000 shares through centralized auction transactions, accounting for the company's total

The proportion of the total share capital is 0.04%, and the highest purchase price is 51.00 yuan/share, and the lowest price is 46.49 yuan/share

The amount paid is RMB8,139,885.69 (excluding stamp duty, transaction commissions and other transaction fees).

As of January 31, 2025, the company has cumulatively repurchased the company's shares through centralized auction transactions

2,282,700 shares, accounting for 0.50% of the company's total share capital, the highest purchase price was 51.00 yuan/share, the lowest price was 23.77 yuan/share, and the total amount of funds paid was 73,146,800.83 yuan (excluding stamp duty, transaction commissions and other transaction costs).

3. Other matters

The company will strictly follow the "Rules for Share Repurchase of Listed Companies", "Shanghai Stock Exchange Self-Regulatory Guidelines for Listed Companies No. 7 - Repurchase of Shares" and other relevant regulations, within the repurchase period according to market conditions to make repurchase decisions and implement them, and at the same time timely fulfill the obligation of information disclosure according to the progress of the repurchase of shares, please pay attention to the investment risks.

The announcement is hereby made.

Board of Directors of Yantai Ruichuang Micro-Nano Technology Co., Ltd

February 7, 2025