公告日期：2025-09-22

CHINAENVIRONMENTALTECHNOLOGYAND

BIOENERGY HOLDINGS LIMITED

中科生物控股有限公司

(Incorporated in the Cayman Islands with limited liability)

（於開曼群島註冊成立之有限公司）

(Stock Code 股份代號: 1237)

NOTIFICATION LETTER 通 知 信 函

22 September 2025
Dear registered shareholder(s),

China Environmental Technology and Bioenergy Holdings Limited (the “Company”)

- Notice of Publication of EGM Circular, Notice of EGM and EGM Proxy Form (the “Current Corporate Communications”)

The Current Corporate Communications of the Company has been published in English and Chinese languages and are available on the website of The Stock
Exchange of Hong Kong Limited (“HKEX”) at www.hkexnews.hk and the Company’s website at www.merrygardenholdings.com. If you have any difficulty in
receiving or gaining access to the Current Corporate Communications posted on the Company’s website for any reason, please se nd your request (specifying your
name, address and request) by email at env.tech.ecom@computershare.com.hk or by notice in writing to the Company’s Hong Kong share registrar (the “Share
Registrar”), Computershare Hong Kong Investor Services Limited, at 17M Floor, Hopewell Centre, 183 Queen’s Road East, Wan Chai, Hong Kong. The Company
will promptly upon receipt of your request send the Current Corporate Communications to you in printed form free of charge.

Arrangement of Electronic Dissemination of Corporate Communications and Solicitation of Electronic Contact Details

Pursuantto Rule2.07 oftheRules Governing TheListing ofSecuritieson TheStock Exchangeof Hong Kong Limited (the“Listing Rules”) relating to theexpansion
of paperless listing regime and ele……
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