公告日期：2025-04-26

Stock Code: 200771 Stock ID: Hangqilun B Announcement No.: 2025-54
Hangzhou Turbine Power Group Co., Ltd.

Announcement on the issuance of letter of commitment by the indirect
controlling shareholder

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") intends to
absorb and merge Hangzhou Turbine Power Group Co., Ltd.by issuing Ashares to all shareholders
of Hangzhou Turbine Power Group Co., Ltd. (hereinafter referred to as "HTC" or "the Company")
by exchanging shares and absorbing HTC (hereinafter referred to as the "Share Exchange
Merger").

Recently, Hangzhou State-owned Capital Investment and Operation Co., Ltd. (hereinafter
referred to as "Hangzhou Capital"), the indirect controlling shareholder of the Company, issued a
"Letter of Commitment", and the relevant information is hereby announced as follows:

I.The specific content of the Letter of Commitment

In order to fully protect the interests of the minority shareholders of both parties to the share
exchange merger, and avoid the irrational fluctuation of Hirisun's stock price after the completion
of the share exchange, Hangzhou Capital, as the controlling shareholder of the surviving company
after the completion of the merger, made the following commitment on matters related to the
increase holding in the shares of the surviving company under specific circumstances after the
completion of the implementation of the share exchange:

1. If the stock trading price of Hirisun on any trading day within 15 trading days from the
date of completion of the implementation of this share exchange is lower than the exchange price
of 9.56 yuan per share (hereinafter referred to as the ……
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