POLL RESULTS OF THE ANNUAL GENERAL MEETING HELD ON 30 MAY 2024

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.CM Hi-Tech Cleanroom Limited捷芯隆高科洁净系统有限公司 (Incorporated in the Cayman Islands with members’ limited liability) (Stock Code: 2115) POLL RESULTS OF THE ANNUAL GENERAL MEETING HELD ON 30 MAY 2024 References are made to the circular (the ‘‘Circular’’) of CM Hi-Tech Cleanroom Limited (the ‘‘Company’’) dated 26 April 2024 the notice (the ‘‘Notice’’) of the annual general meeting (the ‘‘AGM’’) of the Company dated 26 April 2024 and the clarification announcement of the Company dated 10 May 2024. Unless the context otherwise requires terms used in this announcement shall have the same meanings as those defined in the Circular and the Notice.At the AGM held on 30 May 2024 all the proposed resolutions as set out in the notice of the AGM dated 26 April 2024 were taken by way of a poll. The poll results are as follows: Number of Votes (%) Ordinary Resolutions For Against 1. To receive the audited consolidated financial 547227350 0 statements of the Company and its subsidiaries and (100%) (0%) the reports of the directors and auditors for the year ended 31 December 2023. 2. To declare a final dividend of HK0.53 cents per 547227350 0 share for the year ended 31 December 2023. (100%) (0%) 3(a). To re-elect Mr. Law Eng Hock as an Executive 547227350 0 Director of the Company. (100%) (0%) 3(b). To re-elect Mr. Wu Chun Sing as an Independent 547227350 0 Non-executive Director of the Company. (100%) (0%) 3(c). To authorize the board of directors to fix the 547227350 0 respective directors’ remuneration. (100%) (0%) 4. To re-appoint Grant Thornton Hong Kong Limited 547227350 0 as auditors of the Company and to authorize the (100%) (0%) board of directors to fix their remuneration.– 1 –Number of Votes (%) Ordinary Resolutions For Against 5. To give a general mandate to the directors to 547227350 0 repurchase shares of the Company not exceeding (100%) (0%) 10% of the total number of issued shares of the Company as at the date of passing of this resolution. 6. To give a general mandate to the directors to issue 547227350 0 allot and deal with additional shares of the (100%) (0%) Company not exceeding 20% of the total number of issued shares of the Company as at the date of passing of this resolution. 7. To extend the general mandate granted to the 547227350 0 directors to issue allot and deal with additional (100%) (0%) shares in the capital of the Company by the aggregate number of the shares repurchased by the Company.Notes: (a) As a majority of the votes were cast in favour of each of the resolutions numbered 1 to 7 all resolutions were duly passed as ordinary resolutions.(b) As at the date of the AGM the total number of shares of the Company in issue was 1400000000 shares.(c) The total number of shares of the Company entitling the holder to attend and vote on the resolutions at the AGM was 1400000000 shares.(d) There were no shares entitling the holder to attend and abstain from voting in favour of the resolutions at the AGM as set out in rule 13.40 of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the ‘‘Listing Rules’’).(e) None of the shareholders of the Company were required under the Listing Rules to abstain from voting on the resolutions at the AGM.(f) None of the shareholders of the Company have stated their intention in the Company’s circular dated 26 April 2024 to vote against or to abstain from voting on any of the resolutions proposed at the AGM.(g) The Company’s branch share registrar Tricor Investor Services Limited acted as the scrutineer for the poll taken at the AGM.(h) All directors of the Company attended the AGM by electronic means.By Order of the Board CM Hi-Tech Cleanroom Limited Ng Yew Sum Chairman and Executive Director Hong Kong 30 May 2024 – 2 –As at the date of this announcement the Board comprises: (1) Mr. NG Yew Sum (Chairman) Mr. CHIN Sze Kee and Mr. LAW Eng Hock as the executive Directors; and (2) Mr. NG Seng Leong Mr. Martin Giles MANEN and Mr. WU Chun Sing as the independent non-executive Directors.–3–