SIIC Environment : ANNOUNCEMENT RELATING TO ANNUAL GENERAL MEETING TO BE HELD ON 30 APRIL 2021

The Singapore Exchange Securities Trading Limited, Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

SIIC ENVIRONMENT HOLDINGS LTD.

上海實業環境控股有限公司*

(Incorporated in the Republic of Singapore with limited liability)

(Hong Kong stock code: 807)

(Singapore stock code: BHK)

ANNOUNCEMENT RELATING TO ANNUAL GENERAL MEETING

TO BE HELD ON 30 APRIL 2021

1. INTRODUCTION

The Board of Directors ("Board") of SIIC Environment Holdings Ltd. ("Company") refers to:

• (a) the COVID-19 (Temporary Measures) Act 2020 passed by Parliament on 7 April 2020 ("Temporary Measures Act") which enables the Minister of Law by order to prescribe alternative arrangements for, amongst others, listed companies in Singapore to conduct general meetings, either wholly or partly, by electronic means;

• (b) the COVID-19 (Temporary Measures) (Alternative Arrangements for Meetings for Companies, Variable Capital Companies, Business Trusts, Unit Trusts and Debenture Holders) Order 2020 issued by Minister of Law on 13 April 2020, as amended from time to time ("Meeting Order"), which sets out the alternative arrangements in respect of, amongst others, general meetings of listed companies in Singapore. The Meeting Order has been extended from 30 September 2020 to 30 June 2021 and amendments to the Temporary Measures Act come into force on 29 September 2020.;

• (c) A joint statement issued on 13 April 2020, and subsequently updated on 27 April 2020 and 1 October 2020, by the Monetary Authority of Singapore, the Accounting and Corporate Regulatory Authority and the Singapore Exchange Regulation to provide guidance on the conduct of general meetings during the period when elevated safe distancing measures are in place. In view of these development, general meetings which held on or before 30 June 2021 can be held via electronic means, and are encouraged to do so; and

• (d) the limited attendance in person at the 2021 Annual General Meeting ("2021 AGM") venue in Hong Kong and precautionary measures pursuant to the latest amendments to the Prevention and Control of Disease (Prohibition of Group Gathering) Regulation (Cap. 599G of the Laws of Hong Kong), the 2021 AGM in Hong Kong is exempted from the statutory prohibition of group gathering of more than 4 persons in public place, provided that no food or drink is served and that measures are in place for separating the attendees in different rooms or partitioned areas, each accommodating not more than 20 persons.

2. DATE OF ANNUAL GENERAL MEETING

The Board wishes to inform shareholders of the Company (the "Shareholders") that the 2021 AGM will be physically held in Hong Kong at Tactic Room II, 24/F, Admiralty Centre I, 18 Harcourt Road, Admiralty, Hong Kong (for the Shareholders in Hong Kong (the "Hong Kong Shareholders")) and by way of electronic means (for the Shareholders in Singapore (the "Singapore Shareholders")) on 30 April 2021 at 10.00 a.m. The Company will be issuing the following documents in connection with the 2021 AGM:

(a)the circular of the Company dated 26 March 2021 (the "Circular") to the Notice of 2021 AGM dated 26 March 2021 (the "Notice of 2021 AGM") to be tabled at the AGM;

• (b) the Notice of the 2021 AGM; and

• (c) the proxy form.

3. NO DESPATCH OF PRINTED COPIES OF CIRCULAR (FOR THE SINGAPORE SHAREHOLDERS)

In line with the implementation of the use of electronic communications to promote sustainability by conserving environmental and financial resources, no printed copies of the FY2020 annual report and Circular will be despatched to the Singapore Shareholders. However, printed copies of the Notice of 2021 AGM and the proxy form will be despatched to the Singapore Shareholders.

An electronic copy of each of the Notice of 2021 AGM, the Circular and the proxy form has also been made available on:

• (i) the home page of the Company's corporate website athttp://www.siicenv.com/en/ ("SIIC Corporate Website");

• (ii) The Stock Exchange of Hong Kong Limited's website atwww.hkexnews.hk ("SEHK Website"); and

• (iii) theSGXwebsiteat

https://www.sgx.com/securities/company-announcements

("SGXNet").

An electronic copy of the FY2020 annual report of the Company has been made available on the SIIC Corporate Website, SEHK Website and SGXNet.

Any shareholder who wishes to request for a physical copy of the FY2020 annual report and interim report for year 2021 should complete the request form which will be mailed to them.

4. ALTERNATIVE ARRANGEMENTS FOR 2021 AGM

A. NO PHYSICAL ATTENDANCE (FOR THE SINGAPORE SHAREHOLDERS)

In view of the current COVID-19 meeting orders in Singapore, the Singapore Shareholders will not be allowed to attend the 2021 AGM in person.

Alternative arrangements have instead been put in place to allow the Singapore Shareholders to participate in the 2021 AGM by:

• (i) watching or listening to the 2021 AGM proceedings via a "live" webcast. The Singapore Shareholders who wish to participate as such will have to pre-register in the manner outlined in paragraph 4(b) below;

• (ii) submitting questions ahead of the 2021 AGM. Please refer to paragraph 4(c) below for further details; and

• (iii) appointing the Chairman of the 2021 AGM (the "AGM Chairman") proxy to attend, speak and vote on their behalf at the 2021 AGM. Please refer to paragraph 4(d) below for further details.

Non-SRS holders whose shares are registered under Depository Agents ("DAs") must also contact their respective DAs to indicate their interest in order for their respective DAs to make the necessary arrangements for them to participate in the Live Webcast of the 2021 AGM proceedings.

B.

"LIVE" WEBCAST (FOR THE SINGAPORE SHAREHOLDERS)

The 2021 AGM proceedings will be conducted via electronic means. The Singapore Shareholders will be able to watch or listen to the proceedings via a "live" webcast on their mobile phones, tablets or computers.

In order to do the above, the Singapore Shareholders will have to follow these steps:

(i)The Singapore Shareholders (including those who hold their shares through relevant intermediaries1) who wish to watch or listen to the "live" webcast must pre-register at the following email address:[e-mail] with the following details for verification purposes,:

• (i) Full name;

• (ii) Identification/registration number; and

• (iii) Manner in which the shares are held (e.g. via CDP, CPF or SRS)

no later than 10.00 a.m. on 23 April 2021 ("Registration Deadline").

1 A relevant intermediary is:

• (a) a banking corporation licensed under the Banking Act (Chapter 19) of Singapore or a wholly-owned subsidiary of such a banking corporation, whose business includes the provision of nominee services and who holds shares in that capacity;

• (b) a person holding a capital markets services licence to provide custodial services for securities under the Securities and Futures Act (Chapter 289) of Singapore and who holds shares in that capacity; or

• (c) the Central Provident Fund Board ("CPF Board") established by the Central Provident Fund Act (Chapter 36) of Singapore, in respect of shares purchased under the subsidiary legislation made under that Act providing for the making of investments from the contributions and interest standing to the credit of members of the Central Provident Fund, if the CPF Board holds those shares in the capacity of an intermediary pursuant to or in accordance with that subsidiary legislation.

Following authentication of his/her/its status as the Singapore Shareholder of the Company, such Singapore Shareholder will receive an email on their authentication status and the details to access the Live Webcast of the 2021 AGM proceedings. The Singapore

Shareholders must not forward the Live Webcast details to other persons who are not the members/Depositors and who are not entitled to attend the 2021 AGM.

(ii) The Singapore Shareholders who have pre-registered by the Registration Deadline in accordance with paragraph 3 above but do not receive an email response by 5.00 p.m. on 26 April 2021 may contact the Company for assistance at the following email address:[e-mail] or the Company's Share Registrar at the following email address:[e-mail](for the Singapore Shareholders), with the following details included: (1) the member's full name; and (2) his/her/its identification/registration number.

The Singapore Shareholders are reminded that the 2021 AGM proceedings are private. Instructions on access to the "live" webcast of the 2021 AGM proceedings should therefore not be shared with anyone who is not a Shareholder of the Company or otherwise not authorised to attend the 2021 AGM. Recording of the "live" webcast in whatever form is also strictly prohibited.

For optimal user experience, it is recommended that the Singapore Shareholders use the following browser versions when accessing the "live" webcast of the 2021 AGM proceedings:

• • Mozilla Firefox 69 and above; or

• • Safari 12.1.2 and above; or

• • Google Chrome 74 and above; or

• • Microsoft Edge 79 and above.

• C. SUBMISSION OF QUESTIONS

• The Shareholders may also submit questions related to the resolutions to be tabled for approval

• at the 2021 AGM or the Company's businesses and operations.

• All questions must be submitted no later than the Registration Deadline through any one of the following means:

• (a) via the following email address:[e-mail];or

• (b) by mail to the Company's registered office in Singapore at One Temasek Avenue, #37-02 Millenia Tower, Singapore 039192;

The following details must be included with the submitted questions for verification purposes: (i) Full name, (ii) Identification/registration number and (iii) Manner in which the shares are held (e.g. via CDP, CPF or SRS), failing which the submission will be treated as invalid.

The Company will endeavour to address substantial and relevant questions relating to the resolutions to be tabled for approval at the 2021 AGM or the Company's businesses and operations.

Please note that the Singapore Shareholders will not be able to ask questions during the 2021 AGM and accordingly, it is important for the Singapore Shareholders to submit their questions by the Submission Deadline.

The Company will publish the minutes of the 2021 AGM on SGXNET, SEHK Website and the Company's website within one month after the date of 2021 AGM, together responses from the Board and management of the Company in relation to substantial and relevant comments or queries from the Shareholders relating to the resolutions to be tabled for approval at the 2021 AGM.

D.

VOTING BY PROXY

The Shareholders will not be able to vote online at the 2021 AGM. Instead, if the Singapore Shareholders (whether individuals or corporates) wish to exercise their votes, they must submit a proxy form to appoint the AGM Chairman to vote on their behalf.

For the Hong Kong Shareholders, completion and return of the proxy form will not preclude you from attending and voting at the 2021 AGM in person should you so wish. If you attend and vote at the 2021 AGM, the authority of your proxy will be revoked.

Shareholders (whether individuals or corporates) appointing the AGM Chairman as proxy must give specific instructions as to his/her/its manner of voting, or abstentions from voting, in the proxy form, failing which the appointment and votes will be treated as invalid.

The proxy form must be submitted to the Company no later than 10.00 a.m. on 27 April 2021 (being 72 hours before the time appointed for the 2021 AGM) through any one of the following means:

• (a) if submitted by post, be lodged at the office of the Company's registered office in Singapore at One Temasek Avenue, #37-02 Millenia Tower, Singapore 039192 (for Singapore Shareholders) or at the Company's branch share registrar in Hong Kong, Computershare Hong Kong Investor Services Limited at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong (for Hong Kong Shareholders); or

• (b) if submitted electronically, be submitted via email to the following email address:[e-mail].

The Shareholders who hold their shares through relevant intermediaries1 and who wish to exercise their votes by appointing the AGM Chairman as proxy should approach their respective relevant intermediaries (including their respective CPF Agent Banks or SRS Approved Banks) to submit their voting instructions at least seven (7) working days prior to the date of the 2021 AGM.

To ascertain the members' entitlement to attend and vote (where applicable) at the 2021 AGM, the register of members will be closed from Monday, 26 April 2021 to Friday, 30 April 2021, both days inclusive, during which period no transfer of shares can be registered. All transfers of shares, accompanied by the relevant share certificates, must be lodged with the Company's principal share registrar in Singapore, In.Corp Corporate Services Pte. Ltd., (formerly known as RHT Corporate Advisory Pte. Ltd.) at 30 Cecil Street #19-08 Prudential Tower Singapore 049712, (for Singapore Shareholders) no later than 5:00 p.m. on Friday, 23 April 2021, or with the Company's Hong Kong branch share registrar in Hong Kong, Computershare Hong Kong Investor Services Limited at Shops 1712-1716, 17th Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong, (for Hong Kong Shareholders) no later than 4:30 p.m. on Friday, 23 April 2021.

A Depositor's name must appear on the Depository Register maintained by the CDP as at 72 Hours before the time fixed for holding the 2021 AGM in order for the Depositor to be entitled to vote at the 2021 AGM.

As the COVID-19 situation is constantly evolving, the Company has to implement measures to take into account the requirements, guidelines and recommendations of regulatory bodies and government agencies from time to time. Accordingly, the Company may be required to change its 2021 AGM arrangements at short notice. The Shareholders are advised to closely monitor announcements made by the Company on SGXNET and the SEHK website.

The Company seeks the understanding and cooperation of all Shareholders in enabling the Company to hold and conduct the 2021 AGM in compliance with measures to stem the spread of COVID-19 infections.

5. ARRANGEMENTS FOR 2021 AGM (FOR THE HONG KONG SHAREHOLDERS)

Limited attendance in person at the 2021 AGM venue in Hong Kong and precautionary measures pursuant to the latest amendments to the Prevention and Control of Disease (Prohibition on Group Gathering) Regulation (Cap. 599G of the Laws of Hong Kong), the 2021 AGM in Hong Kong is exempted from the statutory prohibition of group gatherings of more than 4 persons in public place, provided that no food or drink is served and that measures are in place for separating the attendees in different rooms or partitioned areas, each accommodating not more than 20 persons. The Company has reviewed the space available at the 2021 AGM venue in Hong Kong and, in order to comply with these new requirements, hereby announces that the maximum number of Shareholders who will be able to physically attend the 2021 AGM in Hong Kong (in person or by proxy) will be 20, and attendees will be accommodated in partitioned areas with not more than 20 persons in each area. Registration of attendance will start at 9:00 a.m. on Friday, 30 April 2021 and to the extent that the attendance limit is reached, Shareholders (or their proxies) who cannot be allocated a seat will be denied entry into the 2021 AGM venue in Hong Kong.

The following precautionary measures will be implemented at the 2021 AGM in Hong Kong:

• (1) All attendees must wear face masks at all times inside the 2021 AGM venue in Hong Kong or at the waiting area outside the 2021 AGM venue in Hong Kong. Any attendees who do not wear face masks may be requested to leave or denied entry into the 2021 AGM venue in Hong Kong.

• (2) All attendees must clean their hands with alcohol-based hand sanitizer before entering the 2021 AGM venue in Hong Kong.

• (3) Body temperature checks/screening will be conducted on all attendees before they enter the waiting area outside the 2021 AGM venue in Hong Kong. Any person with a body temperature of over 37.2 degrees Celsius may be requested to leave or denied entry into the 2021 AGM venue in Hong Kong.

• (4) No food and beverage service will be provided.

• (5) Attendees may be required to confirm that (i) he/she has not travelled outside of Hong Kong within 14 days immediately before the 2021 AGM ("Recent Travel History");

  • (ii) he/she is not subject to any HKSAR Government prescribed quarantine requirement;

  • (iii) to his/her knowledge, he/she has not, within 14 days immediately before the 2021 AGM, had close contact with any person under quarantine or with Recent Travel History; and (iv) he/she has no flu-like symptoms. Any person who fails to provide the required confirmation, or if he/she shows flu-like symptoms, may be requested to leave or denied entry into the 2021 AGM venue in Hong Kong.

• (6) Seating at the 2021 AGM venue in Hong Kong will be arranged to ensure adequate physical distancing between participants so as to reduce interaction between them.

To the extent permitted under law, the Company reserves the right to deny entry into the 2021 AGM venue in Hong Kong or require any person to leave the 2021 AGM venue in Hong Kong in order to ensure the safety of the attendees at the 2021 AGM venue in Hong Kong.

The Company will continue to monitor the evolving COVID-19 situation and may adjust and/or implement additional precautionary measures as the public health situation changes.

By Order of the Board

SIIC ENVIRONMENT HOLDINGS LTD.

Mr. Yang Jianwei

Executive Director

Hong Kong and Singapore, 25 March 2021

As at the date of this announcement, the non-executive Chairman is Mr. Zhou Jun; the executive Directors are Mr. Yang Jianwei, Mr. Feng Jun, Mr. Xu Xiaobing, Mr. Huang Hanguang and Mr. Zhao Youmin; and the independent non-executive Directors are Mr. Yeo Guat Kwang, Mr. An Hongjun and Mr. Zhong Ming.

* For identification purpose only