CK Infrastructure : NOTIFICATION LETTER TO NON-REGISTERED HOLDER - (1) ANNUAL GENERAL MEETING; AND (2) NOTICE OF PUBLICATION OF ANNUAL REPORT 2020, CIRCULAR DATED 12TH APRIL, 2021, AGM NOTICE, AND PROXY FORM

(Incorporated in Bermuda with limited liability)

（於百慕達註冊成立之有限公司）

(Stock Code 股份代號: 1038)

N O T I F I C AT I O N L E T T E R

12th April, 2021

Dear Non-registered Holder(s) (Note 1),

CK Infrastructure Holdings Limited ("Company")

1. Annual General Meeting ("AGM") of the Company

The AGM of the Company will be held on Wednesday, 12th May, 2021 at 10:00 a.m. at 1st Floor, Harbour Grand Kowloon, 20 Tak Fung Street, Hung Hom, Kowloon, Hong Kong.

Online Attendance at the AGM

In addition to physical attendance, you, as a Non -registered Holder whose shares are held in the Central Clearing and Settlement System through banks, brokers, custodians, nominees or HKSCC Nominees Limited (together, the "Intermediary"), have the option of attending t he AGM online. If you choose to attend the AGM online, you will be able to view a live webcast of the AGM, cast your vote on the resolutions in real time and submit online questions to the Company. From 9:30 a.m. on 12th May, 2021, you can log in to the AGM online platform by visiting https://web.lumiagm.com and entering the login details to be provided to you by Computershare Hong Kong Investor Services Limited, the Company's Branch Share Registrar upon registration.

Whether you choose to attend the Company's AGM in person or online, please contact your Intermediary whom your shares are hel d through to register your AGM attendance with HKSCC Nominees Limited by providing the m with the information they require to enable you to attend and vote.

You should note that the online platform only permits you to submit your vote in respect of all of the shares in respect of which you have been appointed as a proxy or corporate representative by your Intermediary, and there is no option to submit a vote in respect of part only of such shares.

You are reminded to keep the login details in safe custody and not to disclose them to anyone else. The submission of the vote through the online platform using your login details will be conclusive evidence that the vote was validly cast by you as a proxy or corporate r epresentative of your Intermediary. The Company and its agents take no responsibility for all or any loss or other consequence caused by or resulting from any unauthorised use of the login details.

Documents required to be made available at the AGM are accessible from the Company's website (www.cki.com.hk).

2. Notice of publication of (1) Annual Report 2020, (2) Circular dated 12th April, 2021 in relation to the Proposals for Election of Directors at 2021 Annual General Meeting, General Mandates to Issue New Shares and Buy Back Shares and Notice of 2021 Annual General

Meeting ("AGM Notice"), (3) AGM Notice, and (4) Proxy Form (collectively "Current Corporate Communications")

The Company's Current Corporate Communications (both English and Chinese versions) are available on the Company's website at www.cki.com.hk and the website of Hong Kong Exchanges and Clea ring Limited ("HKEX") at www.hkexnews.hk. You may access the Current Corporate Communications by clicking "Investor Information" on the home page of the Company's website or by searching under "Listed Company Information" on the website of HKEX. Viewing the above documents requires Adobe® Reader®. The printed form(s) of Current Corporate Communications is/are enclosed (if applicable).

If you want to request printed version(s) of the Current Corporate Commu nications and future Corporate Communications(Note 2) of the Company, please complete the Request Form enclosed with this letter and send it to the Company c/o its Branch Share Registrar, Computershare Hong Kong Investor Services Limited, using the mailing label and need not affix a stamp when returning (if posted in Hong Kong). Otherwise, please affix an appropriate stamp. The address of Computershare Hong Kong Investor Services Limited is 17M Floor, Hopewell Centre, 183 Queen's Road East, Hong Kong. You may also send your request to [e-mail]. The Request Form may also be downloaded from the Company's website at www.cki.com.hk by clicking "Investor Information" on the home page, then selecting "Request Form for Non-registered Holder" under "Annual Reports", or the website of HKEX at www.hkexnews.hk.

Should you have any queries relating to this letter, please contact the Company's Branch Share Registrar, Computershare Hong Kong Investor Services Limited by telephone at (852) 2862 8558.

Yours faithfully,

CK Infrastructure Holdings Limited

Notes:

1. This letter is addressed to Non-registered Holders (a "Non-registered Holder" means such person or company whose shares in the Company 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). If you have sold or transferred your shares in the Company, please disregard this letter and the Request Form enclosed with this letter.

2. Corporate Communications include but are not limited to (a) the directors' report, 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.