Securities code: 688116 Securities abbreviation: Tiannai Technology Announcement No.: 2025-008

Convertible bond code: 118005 Bond abbreviation: Tiannai convertible bond

Jiangsu Tiannai Technology Co., Ltd

Announcement on the addition of a special account for raising funds and the signing of a regulatory agreement

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 in accordance with the law.

Jiangsu Tiannai Technology Co., Ltd. (hereinafter referred to as the "Company") was held on January 17, 2025

At the 17th meeting of the 3rd board of directors and the 11th meeting of the 3rd board of supervisors, the "Proposal on Increasing the Special Account for Raised Funds and Signing the Regulatory Agreement" was deliberated and approved, and it was agreed that the company would open a new special account for the convertible corporate bond fundraising project ("carbon-based conductive material composite product production project") in Zhenjiang Science and Technology Branch of Bank of Jiangsu Co., Ltd., Zhenjiang New District Branch of China CITIC Bank Co., Ltd., and Zhenjiang New District Branch of Industrial and Commercial Bank of China Co., Ltd. And authorize the staff of the company's finance department to specifically handle the establishment of special accounts and the signing of the supervision agreement on raised funds, and the situation is hereby announced as follows:

First, the basic situation of the funds raised

According to the China Securities Regulatory Commission's Reply on Agreeing to the Registration of Jiangsu Tiannai Technology Co., Ltd. to Issue Convertible Corporate Bonds to Unspecified Targets (Zheng Jian Xu Xu [2021] No. 3679), it was agreed that the company would issue a total of 8.3 million convertible corporate bonds to unspecified objects, each with a face value of RMB 100, to be issued at face value. The total proceeds of the offering amounted to RMB830,000,000.00, with a net proceeds of RMB815,025,000.00 after deducting the issuance expenses of RMB14,975,000.00 excluding tax. All the above-mentioned raised funds have been put in place, and Tianjian Certified Public Accountants (Special General Partnership) has conducted the verification and issued the "Verification Report" (Tianjian Yan [2022] No. 48). The company adopts special account storage and management for the raised funds, and has signed relevant regulatory agreements with sponsor institutions and banks supervising the special account of raised funds.

2. The opening of a special account for raising funds

Up to now, the company's existing convertible corporate bond fundraising project has opened a special account for raising funds as follows:

Account Holder's Name, Bank Name, Bank Account Number, Fundraising Project, Account Status

Jiangsu Tiannai Technology Bank of Suzhou Co., Ltd. Carbon-based conductive material complex

51906600001097 Survival

Co., Ltd. Changshu Branch Joint product production project

Changzhou Tiannai Materials China CITIC Bank Co., Ltd. Carbon-based conductive materials complex

8110501012501909964 Survival

Technology Co., Ltd. Zhenjiang New District Branch Joint product production project

Changzhou Tiannai Materials Bank of Suzhou Co., Ltd. Carbon-based conductive materials complex

51816600001101 Survival

Technology Co., Ltd. Changshu Branch Joint product production project

3. The situation of the new special account for raising funds

In order to standardize the management of the company's raised funds, further improve the efficiency of the company's raised funds management, and increase the company's cash management income, the company intends to open a special account for the convertible corporate bond fundraising project ("carbon-based conductive material composite product production project") in Zhenjiang Science and Technology Branch of Bank of Jiangsu Co., Ltd., Zhenjiang New District Branch of China CITIC Bank Co., Ltd., and Zhenjiang New District Branch of Industrial and Commercial Bank of China Co., Ltd., and the new account information is subject to later registration.

The staff of the company's finance department will, in accordance with the authorization of the board of directors and in accordance with the relevant regulations, sign the supervision agreement on the raised funds with the sponsor institution and the bank opening the special account for the raised funds, supervise the deposit and use of the raised funds, and ensure that there are no major differences between the content of the regulatory agreement to be signed and the tripartite supervision agreement (template) for the storage of special accounts for raised funds formulated by the Shanghai Stock Exchange.

The announcement is hereby made.

Board of Directors of Jiangsu Tiannai Technology Co., Ltd

January 18, 2025