Stock Code: 688002 Securities abbreviation: RuiChuang micro nano Announcement No.: 2021-022

Yantai RuiChuang micro nano technology Co., Ltd

Announcement on the performance of the Secretary of the board of directors

The board of directors and all directors of the company guarantee that there are no false records, misleading statements or major omissions in the contents of this announcement, and shall bear legal liabilities for the authenticity, accuracy and completeness of the contents in accordance with the law.

Yantai RuiChuang micro nano technology Co., Ltd. (hereinafter referred to as "the company") held the 18th meeting of the second board of directors on April 26, 2021, deliberated and passed the proposal on appointing the Secretary of the board of directors of the company. After being nominated by the chairman of the company and examined by the nomination committee of the board of directors, the board of directors agreed to appoint Ms. Huang Yan as the Secretary of the board of directors of the company. The term of office is from the date of deliberation and approval at the 18th meeting of the second board of directors to the expiration date of the second board of directors. As Ms. Huang Yan has not obtained the qualification certificate for secretary of the board of directors of the science and technology innovation board, Mr. Ma Hong, chairman of the board, will still perform the duties of secretary of the board of directors before obtaining the secretary qualification certificate of the board of directors of the science and Technology Innovation Board.

Ms. Huang Yan has participated in the qualification training for the Secretary of the board of directors of science and technology innovation board organized by Shanghai Stock Exchange, and obtained the qualification certificate of secretary of board of directors of Shanghai Stock Exchange on May 11, 2021. Recently, Ms. Huang Yan's qualification has been approved by Shanghai stock exchange without objection. She has formally performed the duties of secretary of the board of directors since the date of this announcement.

The contact information of the Secretary of the board of directors is as follows:

Tel: 0535-3410615

Fax: 0535-3410610

Email: raytron@raytrontek.com

Office address: No.11 Guiyang street, Yantai Development Zone

It is hereby announced.

Board of directors of Yantai RuiChuang micro nano technology Co., Ltd