Tus Environmental Science And Technology Development Co.Ltd(000826) : Tus Environmental Science And Technology Development Co.Ltd(000826) description on confidentiality measures and confidentiality system of this transaction

Tus Environmental Science And Technology Development Co.Ltd(000826)

Measures taken in connection with this transaction

Description of confidentiality measures and systems

City Development Environment Co.Ltd(000885) (hereinafter referred to as the “merging party”) absorbs and consolidates Tus Environmental Science And Technology Development Co.Ltd(000826) and issues A-Shares to raise matching funds (hereinafter referred to as the “major asset restructuring”) by issuing A-Shares to all shareholders of Tus Environmental Science And Technology Development Co.Ltd(000826) (hereinafter referred to as “the company” and “the merged party”).

At the beginning of contacting the merger party with this major asset restructuring, the company has always taken strict confidentiality measures and systems to ensure that the information related to this major asset restructuring is not leaked. The specific measures are as follows: 1. Strictly order the relevant personnel involved in the company’s decision-making and other informed personnel to keep the information of this major asset restructuring confidential, The information of this major asset restructuring shall not be disclosed to non relevant personnel without permission.

2. It is not allowed to disclose the company’s secrets in private contacts and communications, talk about the company’s secrets in public places, and transmit the company’s secrets by other means.

3. For the meetings related to this major asset restructuring, select the meeting place with confidentiality conditions, and limit the scope of participants and the scope of communication of meeting contents according to work needs.

4. Assign special personnel to keep the agreements, contracts and other relevant legal documents formed due to this major asset restructuring; Strictly abide by the borrowing management system of confidential documents, materials and archives. If it is necessary to borrow the documents, materials and archives of this major asset reorganization, it must be approved by the general manager.

5. The abandoned draft of this major asset restructuring document must be destroyed to prevent non relevant personnel from reading such draft documents.

In conclusion, the company and relevant personnel of the company have taken necessary measures to prevent the disclosure of confidential information and strictly abide by the confidentiality obligation. The company and its related personnel did not use such information to buy and sell the shares of the merged party and the merged party in the secondary market, nor did they use such information for insider trading.

It is hereby explained.

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(there is no text on this page, which is the seal page of Tus Environmental Science And Technology Development Co.Ltd(000826) instructions on confidentiality measures and confidentiality system adopted for this transaction)

January 24, 2002

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