Stock Code: 200771 Stock ID: Hangqilun B Announcement No.:2025-133

Hangzhou Turbine Power Group Co. Ltd.Prompting Announcement Regarding the Share Exchange Absorption Merger

Involving B-share Transferring to A-share

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.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 the merger plan the Company submitted an application for the delisting of its shares

to the Shenzhen Stock Exchange (hereinafter referred to as the “SZSE”) on November 26 2025.The Shenzhen Stock Exchange approved the Company's application for the delisting of its shares

on December 18 2025the Company will initiate the process of converting HTC (200771)B shares

into Hirisun (300277) A shares. To ensure that investors who hold their shares until the final

trading day and participate in the share conversion are informed of the relevant changes and can

complete the conversion smoothly the Company hereby presents the following points to investors:

I. Securities Accounts for Declaring Hirisun A Shares

1. China Securities Depository and Clearing Corporation Limited Shenzhen Branch (hereinafter

referred to as "CSDC") CITIC Securities Co. Ltd. (hereinafter referred to as “CITIC Securities”)

and the securities custodian institutions of the investors will cooperate with the listed company to

handle the account conversion work involved in this share exchange merger. This work mainly

involves the information of A-share securities accounts and custody units declared by HTC

B-share investors as well as allocating Shenzhen Stock Exchange transfer registration restrictedaccounts and carrying out the corresponding share registration for investors who did not declare

incorrectly declared A-share securities account and custodian unit or whose A-share securities

account and custodian unit declarations failed validation.

2. After the deregistration of B shares is completed CSDC will issue a notice to the custodian

securities companies and custodian banks of HTC B-shares (hereinafter collectively referred to as

"custodian institutions"). Each custodian institution shall in accordance with the requirements of

the notice contact investors to declare or confirm information such as A-share securities accounts

and custodian units. The key points are as follows:

(1) Situation where the investor has a Shenzhen Stock Exchange A-share account

1) A-share and B-share securities accounts shall be under the same One-code account. If the relationship

between the investor's A-share and B-share securities accounts has not been confirmed the investor shall

be notified to complete the account relationship confirmation procedures; if the A-share and B-share

securities accounts are indeed opened by the same investor but key account registration information is

inconsistent the investor shall be notified to promptly correct the account information;

2) If an investor's A-share securities account is an ineligible account the investor shall be notified to apply

for the procedures to regularize the ineligible account;

3) For investors whose Shenzhen A-share securities accounts are dormant each custodian institution shall

notify them to promptly apply to activate their accounts or to apply to close the accounts and then open

new Shenzhen A-share securities accounts;

4) For investors whose Shenzhen A-share securities account is in a 'restricted from buying' status each

custody institution shall inform the investors that the account is only permitted for selling stocks and

cannot be used to buy stocks or other operations. Investors may also apply to close the account and open a

new Shenzhen A-share securities account.

(2) Situation where investors do not have a Shenzhen A-share account

1) For investors who have not opened a Shenzhen A-share securities account each custodian institution

shall notify them to open one as soon as possible;

2) For investors who are not eligible to open a Shenzhen A-share account CSDC will allocate a transfer

registration restricted account for them;

(3) Situation where an investor has a Shenzhen A-share account but cannot be contacted

After the declaration deadline for investors who have not made a declaration if their A and B share

securities accounts are under the same One-code Account and the A-share securities account andcorresponding fund account are normal and to standardize accounts to facilitate the investor’s subsequent

transactions each custodian institution shall declare the A-share account information for the investor

according to the following principles: The custodian institution shall first select the A-share securities

account associated with the same securities company that manages HTC B shares; if not applicable it

shall select the most recently opened A-share securities account as the initial registration A-share account

for Hirisun A shares.

3. To effectively carry out this share exchange the Company has entrusted CITIC Securities with the

overall coordination and compilation of securities account declaration information. All custodian

institutions are requested to submit contact information to CITIC Securities by December 29 2025 and to

complete the Custodian Institutions Contact Information Declaration Form and send it to CITIC

Securities via email hql-zj@citics.com. The contacts at the custodian institutions are primarily responsible

for coordinating the declaration of investor securities accounts custody units and other information

within their respective institutions and cooperating with CSDC the listed company and CITIC Securities

in conducting related work necessary to complete this task.

3. Custodian Contact Information Declaration Form

Custodian Institutions

Contact Name Tel. Phone Email

Name

4. After the declaration verification and allocation are completed CSDC will send the data on the

correspondence between investors' Shenzhen B-share securities accounts and Shenzhen A-share

securities accounts to each custodian institutions. The custodian institutions are required to notify

the investors of the results of the securities account correspondence conversion organize the

handling of the allocation for Shenzhen transfer registration restricted accounts and inform them

of subsequent stock trading procedures and precautions.

5. Foreign investors engaged in non-domestic transactions who wish to designate a domestic

securities company securities account and custodial unit by themselves shall contact the chosen

domestic securities company before the deadline for declaring securities accounts and custodial

units (January 82026) to confirm the securities account (if any) and custodial unit and contact the

selected securities company to complete the declaration.

6. If investors do not declare their A-share securities account or declare it incorrectly before thedeclaration deadline it will be deemed as agreeing to use the allocated Shenzhen market transfer

registration restricted account and the related legal responsibilities and business risks shall be

borne by the investors themselves.

7. If investors do not designate a custodial unit within the specified period or the designated

custodial unit does not meet the requirements 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

8. Investors are requested to pay attention to subsequent announcements and promptly check the

share registration status at the designated securities company.II. Trading Restrictions for Allocated Shenzhen A-Share Accounts

According to the entrustment by Hirisun for domestic individual investors without an A-share

securities account or who have not correctly declared their A-share securities account as well as

domestic-trading foreign investors and foreign investors not trading domestically China Securities

Depository and Clearing Corporation will allocate a Shenzhen market transfer registration

restricted account.Investors are advised to pay special attention:

1. If investors do not submit a declaration or incorrectly declare their A-share securities account

before the declaration deadline it will be deemed that they agree to use the assigned Shenzhen

transfer registration restricted account for the registration of this Hirisun A-share issuance;

2. The Shenzhen transfer registration restricted account generated from the allocation is a special

restricted account which can only be used for sell order submissions and cannot be used for otherpurposes;

3. Investors shall promptly complete the procedures for opening a fund account and other related

formalities for the declaration and allocation of A-share securities accounts in the Shenzhen stock

market.Investors are advised to be aware of the relevant restrictions.III. Change in Transaction Currency

For domestic investors who exchange their B shares of the Company for Hirisun A shares the

future dividends or sales of shares will be settled and cleared in RMB and ultimately settled in

RMB. For the Company's original overseas investors any future reduction of Hirisun A shares

through the restricted transfer accounts via the Shenzhen market or RMB funds received from

dividends will be converted into foreign currency by domestic securities firms and ultimately

settled in Hong Kong dollars. Investors are advised to be aware of the change in transaction

currency.IV. Delisting and Deregistration of B Shares

According to this merger plan HTC B shares (HTC B) shall go through the relevant procedures

for terminating listing and delisting and can only complete the termination of listing and delisting

after obtaining approval from the Shenzhen Stock Exchange. The delisting date is December 22

2025. After HTC B is delisted based on the deregistration application submitted by HTC B China

Securities Depository and Clearing Corporation (CSDC) will handle the deregistration process for

HTC B provide relevant information such as the list of investors at the time of B share exit

registration and terminate the registration relationship with HTC B.At that time investors' securities accounts will no longer register the Company's B shares

and it will also be impossible to carry out pledging freezing transfer or other operations of the

Company's B shares through China Securities Depository and Clearing Corporation. Investors are

advised to take note and continue to follow subsequent announcements.Investors who wish to understand matters related to account conversion involved in the share

exchange are advised to refer to 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