POLL RESULTS OF THE ANNUAL GENERAL MEETINGHELD ON THURSDAY, 20 JUNE 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.DENOX ENVIRONMENTAL & TECHNOLOGY HOLDINGS LIMITED (Incorporated in the Cayman Islands with limited liability) (Stock Code: 1452) POLL RESULTS OF THE ANNUAL GENERAL MEETING HELD ON THURSDAY 20 JUNE 2024 POLL RESULTS OF THE AGM Reference is made to the notice (the “Notice”) of the annual general meeting (the “AGM”) of Denox Environmental & Technology Holdings Limited (the “Company”) and the circular (the “Circular”) of the Company both dated 25 April 2024. Capitalised terms used in this announcement shall have the same meanings as those used in the Circular unless otherwise stated.As at the date of the AGM a total number of 592844400 Shares were in issue and the holders of which are entitled to attend and vote for or against the resolutions proposed at the AGM. There were no Shares entitling the holders to attend and abstain from voting in favour of any of the resolutions proposed at the AGM as set out in Rule 13.40 of the Listing Rules and there were no Shares requiring the Shareholders to abstain from voting at the AGM under the Listing Rules. None of the Shareholders stated their intention in the Circular to vote against or to abstain from voting on any of the resolutions proposed at the AGM.The Company’s Hong Kong branch share registrar and transfer office Tricor Investor Services Limited acted as the scrutineer for the purpose of vote-taking at the AGM.All the Directors had attended the AGM either in person or in electronic form.- 1 -The poll results of the AGM in respect of all the ordinary resolutions were as follows: Number of Votes (%) Ordinary Resolutions For Against 1. To receive and adopt the audited consolidated financial 357405401 0 statements and the reports of directors (the “Directors”) and (100.00%) (0.00%) the auditors of the Company for the year ended 31 December 2023. 2. (a) To re-elect the following retiring Directors (as separate resolutions): (i) Ms. Zhao Shu as an executive Director; and 357405401 0 (100.00%)(0.00%) (ii) Mr. Ong Chor Wei as an independent non- 357405401 0 executive Director. (100.00%) (0.00%) (b) To authorise the board of Directors (the “Board”) to 357405401 0 fix the Directors’ remuneration. (100.00%) (0.00%) 3. To re-appoint CL Partners CPA Limited as the auditor of the 357405401 0 Company and to authorise the Board to fix its remuneration. (100.00%) (0.00%) 4. To grant an unconditional general mandate to the Directors 357405401 0 to allot issue and deal with additional shares of the (100.00%) (0.00%) Company (the “Shares”) not exceeding 20% of the total number of the Shares in issue as at the date of passing this resolution. 5. To grant an unconditional general mandate to the Directors 357405401 0 to buy-back Shares not exceeding 10% of the total number (100.00%) (0.00%) of the Shares in issue as at the date of passing this resolution. 6. To extend the general mandate granted under resolution no. 357405401 0 4 to allot issue and deal with additional Shares representing (100.00%) (0.00%) the number of the Shares bought back pursuant to the general mandate granted by resolution no. 5.- 2 -As more than 50% of the votes attaching to the Shares held by the Shareholders present and voting in person or by proxy at the AGM were cast in favour of each of the above ordinary resolutions numbered 1 to 6 such resolutions were duly passed as ordinary resolutions of the Company by the Shareholders by way of poll.By Order of the Board Denox Environmental & Technology Holdings Limited Zhao Shu Chairlady Hong Kong 20 June 2024 As at the date of this announcement the Board comprises Ms. Zhao Shu and Mr. Li Ke as executive Directors; Mr. Li Xingwu as a non-executive Director; and Ms. Chan Yeuk Wa Mr. Li Min and Mr.Ong Chor Wei as independent non-executive Directors.