圣邦股份:H股公告-致非登记股东之函件-以电子方式发布公司通讯之安排

SG Micro Corp

聖邦微電子（北京）股份有限公司

(A joint stock company incorporated in the People’s Republic of China with limited liability)

（於中華人民共和國註冊成立的股份有限公司）

（Stock Code 股份代號：3661）

4 September 2026

Dear Non-Registered Holder (1)

Arrangement of Electronic Dissemination of Corporate Communications

Pursuant to Rule 2.07A of the Rules Governing the Listing of Securities (the “Listing Rules”) on The Stock Exchange of Hong Kong Limited (the “StockExchange”) SG Micro Corp (the “Company”) has adopted arrangement to disseminate corporate communications (“Corporate Communications” (2))

electronically. No printed copies of Corporate Communications will be mailed out to you except by request. Please note that both the English and Chinese

versions of all future Corporate Communications will be available electronically on the website of the Company at www.sg-micro.com and the website of

the Stock Exchange at www.hkexnews.hk (the “Website Version”) in place of printed copies.The Company will not send a notice of publication of the Website Version of Corporate Communications to you.We encourage you to access Corporate Communications of the Company in electronic form on the Company’s website. If you wish to receive printed copies

of all future Corporate Communications please complete and return the Request Form on the reverse side of this letter to the Company’s H share registrar

and transfer office (the “H Share Registrar”) Tricor Investor Services Limited at 17/F Far East Finance Centre 16 Harcourt Road Hong Kong or send

an email to 3661-ecom@vistra.com. Please note that the hardcopy request will be valid until expired at the end of each financial year of the Company

unless being revoked or superseded (whichever is earlier). Further request in writing will be required if a non-registered holder prefers to continue receiving

hard copies of future Corporate Communications.Should you have any queries relating to any of the above matters please call the H Share Registrar’s telephone hotline at (852) 2980 1333 during business

hours from 9:00 a.m. to 6:00 p.m. from Monday to Friday excluding public holidays or send an email to 3661-ecom@vistra.com.By order of the Board

SG Micro Corp

Zhang Shilong

Chairman of the Board Executive Director and General Manager

Notes:

(1) This notification letter is addressed to “Non-Registered Holder” which means such person or company whose shares are held in The Central Clearing and Settlement

System (CCASS) and who has notified the Company from time to time through Hong Kong Securities Clearing Company Limited to receive Corporate Communications.

(2) Corporate Communications include any document(s) issued or to be issued by the Company for the information or action of holders of any of its securities or the investing

public including but not limited to (a) the directors’ report and its annual accounts together with a copy of the auditors’ report and where applicable its summary financial

report; (b) the interim report and where applicable its summary interim report; (c) a notice of meeting; (d) a listing document; (e) a circular; and (f) a proxy form.各位非登記持有人 (1 )：

以電子方式發布公司通訊之安排

根據香港聯合交易所有限公司（「聯交所」）證券上市規則（「上市規則」）第 2.07A 條，聖邦微電子（北京）股份有限公司（「本公司」）已採納有關向其非登記持有人發佈日後所有公司通訊（「公司通訊」(2)）的安排。所有公司通訊，包括英文及中文版本，均透過本公司網站（www.sg-micro.com）及聯交所網站（www.hkexnews.hk）（「網站版本」）以電子方式向非登記持有人提供並僅會於個別非登記持有人要求時才向其發送印刷本。

本公司不會向閣下發出公司通訊網站版本的登載通知。

本公司鼓勵閣下於本公司網站以電子形式瀏覽本公司的公司通訊。若閣下希望收取日後公司通訊之印刷版，請填妥本函背頁之申請表格並交回本公司的 H 股股份過戶登記處（「H 股股份過戶登記處」）卓佳證券登記有限公司，地址為香港夏慤道 16 號遠東金融中心 17 樓或發送電子郵件至 3661-ecom@vistra.com。請注意，非登記持有人以印刷版本要求將直至本公司每年財政年度的結束日到期前有效，除非被撤銷或取代（以較早者為準）。若非登記持有人希望繼續收到日後公司通訊的印刷本，則需要再作書面要求。

如閣下對本函內容有任何疑問，請致電本公司 H 股股份過戶登記處電話熱線(852) 2980 1333，辦公時間為星期一至五（公眾假期除外）上午 9 時正至下午 6 時正，或電郵至 3661-ecom@vistra.com。

承董事會命

聖邦微電子（北京）股份有限公司

董事長、執行董事兼總經理張世龍

2026 年 9 月 4 日

附註：

(1) 此函件乃向本公司之非登記之持有人（指股份存放於中央結算及交收系統的人士或公司，並透過香港中央結算有限公司不時向本公司發出通知，希望收取公司通訊）發出。

(2) 公司通訊包括本公司發佈或將予發佈以供其任何證券持有人或投資大眾參照或採取行動的任何文件，其中包括但不限於 (a) 董事會報告、公司年度帳

目連同核數師報告以及（如適用）財務摘要報告； (b) 中期報告及（如適用）中期摘要報告； (c) 會議通告； (d) 上市文件； (e) 通函；及 (f) 委任代表表格。Non-Registered Holder’s information (English name and Address): SG Micro Corp非登記持有人資料（英文姓名及地址）: 聖邦微電子（北京）股份有限公司

(A joint stock company incorporated in the People’s Republic of China with limited liability)（於中華人民共和國註冊成立的股份有限公司）（Stock Code 股份代號：3661）

REQUEST FORM 申請表格

To: SG Micro Corp 致：聖邦微電子（北京）股份有限公司

(Stock Code: 3661) (the “Company”) （股份代號：3661）（「本公司」）

c/o Tricor Investor Services Limited 經卓佳證券登記有限公司

17/F Far East Finance Centre 香港夏慤道 16 號

16 Harcourt Road Hong Kong

遠東金融中心 17 樓

REMINDER 提示

As a non-registered holder if you wish to receive Corporate Communications (1) pursuant to the Listing Rules you should liaise with your bank(s)

broker(s) custodian(s) nominee(s) or HKSCC Nominees Limited through which your shares are held (collectively the “Intermediaries”) and provide

your email address to your Intermediaries.作為非登記持有人，如有意根據《上市規則》收取公司通訊 (1)，閣下應聯絡代閣下持有股份的銀行、經紀、託管商、代理人或香港中央結算（代理人）有限公司（統稱「中介機構」），並向閣下的中介機構提供閣下的電郵地址。

I/We would like to receive the future Corporate Communications (1) in printed copy of the Company.本人╱吾等要求索取本公司今後刊發之公司通訊 (1) 之印刷本。

Please mark “X” in ONLY ONE of the following boxes(applicable for dissemination arrangement via printed copy):

請在下列方框之中僅標記一項 (X) (適用於以印刷本形式收取公司通訊):

to receive the printed English version ONLY for all future Corporate Communications; OR僅收取所有日後的公司通訊之英文印刷本；或

to receive the printed Chinese version ONLY for all future Corporate Communications; OR僅收取所有日後的公司通訊之中文印刷本；或

to receive the printed English and Chinese versions of all future Corporate Communications.同時收取所有日後的公司通訊之英文及中文印刷本。

Signature: Date:

簽署：日期：

Name: Contact Phone Number:

姓名：（English英文）聯絡電話：

（in block letters 請以正楷填寫）

Notes 附註：

1. Corporate Communications include any document(s) issued or to be issued by the Company for the information or action of holders of any of its securities or the investing public

including but not limited to (a) the directors’ report and its annual accounts together with a copy of the auditors’ report and where applicable its summary financial report; (b)

the interim report and where applicable its summary interim report; (c) a notice of meeting; (d) a listing document; (e) a circular; and (f) a proxy form.公司通訊包括本公司發佈或將予發佈以供其任何證券持有人或投資大眾參照或採取行動的任何文件，其中包括但不限於 (a) 董事會報告、公司年度帳目連同核數師報告以及（如適用）財務摘要報告；(b) 中期報告及（如適用）中期摘要報告；(c) 會議通告； (d) 上市文件；(e) 通函；及 (f) 委任代表表格。

2. By completing and returning this Request Form you have expressly indicated that you prefer to receive all future Corporate Communications of the Company in printed copy.

當閣下填寫及寄回此申請表格後，即表示閣下確認擬收取本公司日後刊發的所有公司通訊的印刷本。

3. This request will be valid unless being revoked or superseded or until expired at the end of each financial year of the Company (whichever is earlier). Further request in writing

will be required if you prefer to continue receiving printed copy of future Corporate Communications.此請求將一直有效，除非被撤銷或取代，或者直到本公司每年財政年度的結束日到期（以較早者為準）。如果閣下希望繼續收到日後的公司通訊的印刷本，則需要做進一步書面請求。

PERSONAL INFORMATION COLLECTION STATEMENT 收集個人資料聲明

“Personal Data” in this statement has the same meaning as “personal data” defined in the Personal Data (Privacy) Ordinance Cap. 486 (the “PDPO”) which may include but not limited

to your name contact telephone number email address and mailing address.Your supply of Personal Data is on a voluntary basis for the purpose of receiving Corporate Communications in the manner chosen. Your Personal Data will be retained for such period as

may be necessary for our verification and record purposes.You have the right to request access to and/or to correct the respective Personal Data in accordance with the provisions of the PDPO. Any such request for access to and/or correction of

the Personal Data should be in writing by either of the following means:

本聲明中所指的「個人資料」具有香港法例第 486 章《個人資料（私隱）條例》（「《私隱條例》」）中「個人資料」的涵義，包括但不限於，閣下的名稱、聯絡電話號碼、電子郵箱地址和郵寄地址。

閣下是自願向本公司提供閣下個人資料，以便以閣下所選之方式接收公司通訊。閣下的個人資料將在適當期間保留作核實及記錄用途。

閣下有權根據《私隱條例》的條文要求查閱及╱或修改閣下的個人資料。任何該等要求均須以書面方式提出。

By mail to: Data Privacy Officer 經郵寄：個人資料私隱主任

Tricor Investor Services Limited 卓佳證券登記有限公司

17/F Far East Finance Centre 香港夏慤道 16 號

16 Harcourt Road Hong Kong 遠東金融中心 17 樓

By email to: is-enquiries@vistra.com

經電郵： is-enquiries@vistra.com

Mailing Label 郵寄標籤

Please cut the mailing label and stick it on an envelope