Stock Code: 200771 Stock ID: Hangqilun B Announcement No.:2025-135

Hangzhou Turbine Power Group Co. Ltd.Prompting Announcement Regarding Procedures for B-Share Shareholders to

Handle Transfer Registration Restricted Account

The members of the Board and the Company acknowledge being responsible for the truthfulness

accuracy and completeness of the announcement. There are no false records misleading

statements or significant omissions in this announcement.Important Notice:

1. This announcement only pertains to shareholders for whom the listed company will

subsequently apply to China Securities Depository and Clearing Corporation for the allocation of

transfer registration restricted accounts in the Shenzhen stock market including domestic

individual investors without A-share securities accounts or who have not correctly declared their

A-share securities accounts domestic-traded foreign investors and foreign investors not trading

domestically hereinafter referred to as 'relevant shareholders'.

2. This announcement does not involve shareholders of Hirisun A shares nor does it involve

B-share investors who have already declared A-share securities accounts and whose declaration

data has been verified.Hangzhou Hirisun Technology Incorporated .(hereinafter referred to as "Hirisun") plans to

absorb and merge Hangzhou Turbine Power Group Co. Ltd. (hereinafter referred to as "HTC" or

the "Company") by issuing A-shares to all share exchange shareholders of HTC(hereinafter

referred to as the "Transaction"). The relevant matters of the Transaction have been approved at

HTC's Second extraordinary general meeting of shareholders in 2025 and have obtained the

approval from the China Securities Regulatory Commission (hereinafter referred to as the "CSRC")

by the document "Approval of Registration for Hangzhou Hirisun Technology Incorporated. to

Absorb and Merge Hangzhou Turbine Power Group Co. Ltd." (No. 2141 [2025]CSRC Permit).According to this merger plan the Company submitted an application to the Shenzhen Stock

Exchange (hereinafter referred to as the "SZSE") for the delisting of its shares on November 26

2025. The Company subsequently received the "Letter of Acceptance for the Application forDelisting of Shares of Hangzhou Turbine Power Group Co. Ltd." (No. 354 [2025]Company

Department Letter) issued by the SZSE on December 2 2025. On December 18 2025 the SZSE

issued the "Decision on the Delisting of Shares of Hangzhou Turbine Power Group Co. Ltd." ( No.

1431 [2025]SZSE). According to this decision the Company's shares will be delisted and removed

from trading starting from December 22 2025. To ensure that B-share investors who hold shares

until the final trading day and convert them are aware of the changes related to the conversion of

HTC(200771) B-shares into Hirisun (300277) A-shares and to smoothly complete the conversion

procedures the following matters are hereby brought to the attention of the Company's B-share

investors:

For domestic individual investors who do not have an A-share securities account or have not

properly declared their A-share securities account domestic trading foreign investors and foreign

investors not trading domestically the Shenzhen branch of China Securities Depository and

Clearing Corporation Limited will provide a Shenzhen market transfer registration restricted

account in free of charge for registering the Hirisun A-share received through share exchange.This securities account is a special restricted account which can only be used for selling orders

and cannot be used for other purposes. After the allocation of the aforementioned Shenzhen

market transfer registration restricted account is completed the relevant shareholders shall

complete the following procedures before they can trade the shares in the transfer registration

restricted account:

1. Domestic Individual Investors

Investors need to complete the RMB third-party custody procedures for the restricted account of

converted shares at the securities company branch where the A-share custody unit declared by the

original B-share custodian is located before they can place subsequent sell orders for the converted

A-shares. If the original B-share custodian has not declared an A-share custody unit for the

convenience of investors Hirisun authorizes CITIC Securities Co. Ltd. (hereinafter referred to as

“CITIC Securities”) to provide a custody unit. The Hirisun A-shares obtained will be custodied in

the CITIC Securities A-share custody unit. Investors whose shares are custodied with CITIC

Securities shall go through the procedures such as opening a fund account at CITIC Securities

before they can trade or transfer custody.

2. Domestic Trading Foreign Investors

Investors need to go to the business department of the securities company where the A-sharecustodian unit was declared by the original B-share custodian securities company to open a capital

account of transfer registration restricted account. Only then can they carry out subsequent sell

orders of the converted A-shares. If the original B-share custodian securities company did not

declare an A-share custodian unit for the convenience of investors Hirisun entrusts CITIC

Securities to provide the custodian unit. The Hirisun A-shares obtained will be deposited in the

CITIC Securities A-share custodian unit. Investors whose shares are custodied in CITIC Securities

can only carry out transactions and transfer custody operations after completing the procedures for

opening a capital account and other related formalities at CITIC Securities.

3. Foreign Investors not Trading Domestically

Since the investor's B-share securities account has not yet been opened with any domestic

securities company after being informed of the account conversion matters the investor shall

independently choose a domestic securities company to serve as the securities company for

transactions involving the restricted account for conversion in the future. The investor needs to

promptly go to the chosen securities company to complete procedures such as opening a fund

account and only after the securities company has completed the linking of the restricted account

for conversion can the investor query and submit sell orders for Hirisun A-shares in the restricted

account for conversion. If a securities company has not applied for an A-share custody unit

Hirisun for the convenience of investors entrusts CITIC Securities to provide the custody unit

and the Hirisun A-shares obtained will be held in a CITIC Securities A-share custody unit.Investors whose shares are entrustedto CITIC Securities shall complete the fund account opening

and related procedures with CITIC Securities before they can trade or transfer custody.If you have any questions please contact CITIC Securities.Contact information for consultations and business transactions with the Zhejiang Branch of

CITIC Securities Co. Ltd.:

Chinese contact: Huang Lei phone: 86-0571-85772223

English contact: Pan Xinchen phone: 86-0571-87995380

E-mail: hql-zj@citics.com

Address: 19th Floor Dikai Silver Building No. 29 East Jiefang Road Shangcheng District

Hangzhou Zhejiang Province

Regarding the conversion of accounts and shares the different categories of B-share

shareholders the allocation of Shenzhen Stock Exchange transfer registration restricted accountsand the procedures for securities account declaration investors can read in detail of the

"Operational Guidelines for the Conversion of A and B Share Securities Accounts in the Share

Exchange Absorption Merger of Hangzhou Turbine Power Group Co. Ltd. by Hangzhou Hirisun

Technology Incorporated.Namely the Related Party Transaction" announced by the Company on

December 20 2025 (Announcember No.:2025-136).This announcement is hereby made.The Board of Directors of Hangzhou Turbine Power Group Co. Ltd.December 202025