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 however arising from or in reliance upon the whole or any part of the contents of this announcement.

(a joint stock company with limited liability incorporated in the People’s Republic of China) (H Shares Stock Code: 00317)

POLL RESULTS OF THE ANNUAL GENERAL MEETING OF 2020 AND THE 2020 FINAL DIVIDEND

The Board is pleased to announce that the 2020 AGM was held on 27 May 2021 and the resolutions set out in the Notice of 2020 AGM were duly passed by the Shareholders.

Reference is made to the notice (“Notice of 2020 AGM”) of CSSC Offshore & Marine Engineering (Group) Company Limited (the “Company”) dated 30 March 2021 in relation to the annual general meeting of 2020 (the “2020 AGM” or “Meeting”). Unless otherwise stated, capitalised terms used herein shall have the same meanings as those used in the Notice of 2020 AGM.

The Board is pleased to announce that the 2020 AGM was held at the Conference Room, 15/F Marine Tower, 137 Gexin Road, Haizhu District, , the People’s Republic of China at 10:00 a.m. on 27 May 2021. The resolutions set out in the Notice of 2020 AGM were duly passed by poll by attending Shareholders and proxies.

The 2020 AGM was convened by the tenth session of the Board of Company and Mr. Han Guangde, the chairman of the Company, presided over the Meeting. The convening, holding and the voting method of the 2020 AGM were in compliance with the requirements of the Company Law of the PRC, the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the “Hong Kong Listing Rules”) and the Articles of Association of the Company.

6 out of 10 existing directors of the Company attended the Meeting, while Mr. Xiang Huiming, being an executive director, Mr. Chen Zhongqian, Mr. Chen Ji and Mr. Gu Yuan, being the non-executive directors of the Company, did not attend the Meeting due to personal work reasons.

2 out of 5 existing supervisors of the Company attended the Meeting, while Mr. Chen Shuofan, being the supervisor of the Company, Mr. Zhang Qinghuan and Mr. Li Kai, both being the staff representative supervisors, did not attend the Meeting due to personal work reasons. Mr. Li Zhidong, being company secretary of the Company, Mr. Hou Zengquan, being chief financial officer of the Company, attended the Meeting.

1 VOTING RESULTS AT THE 2020 AGM

Attendance at the 2020 AGM

A total of 25 Shareholders and their proxies, representing 842,731,644 Shares, attended the 2020 AGM in person and by online voting, details of which are set out below:

1. Number of Shareholders and proxies who attended the Meeting (persons) 25 Of which: Number of Shareholders of A Shares 20 Number of Shareholders of overseas listed foreign Shares (H Shares) 5 2. Total number of Shares carrying voting rights held by Shareholders who attended the Meeting (Shares) 842,731,644 Of which: Total number of Shares held by Shareholders of A Shares 483,395,049 Total number of Shares held by Shareholders of overseas listed foreign Shares (H Shares) 359,336,595 3. Number of Shares carrying voting rights held by Shareholders who attended the Meeting as a percentage of the total number of the Shares carrying voting rights (%) 59.62% Of which: Percentage of Shares held by Shareholders of A Shares relative to the total number of shares (%) 34.20% Percentage of the Shares held by Shareholders of overseas listed foreign Shares (H Shares) to the total number of Shares (%) 25.42%

As at the date of the 2020 AGM, the total number of issued Shares was 1,413,506,378 Shares, being the number of Shares entitling the holders thereof to attend the 2020 AGM and vote for or against or abstain from voting on the resolutions at the 2020 AGM. As at the date of the 2020 AGM, there were no Shares entitling the holders to attend and abstain from voting in favour of the resolutions at the 2020 AGM as set out in Rule 13.40 of the Hong Kong Listing Rules and no Shareholders were required under the Hong Kong Listing Rules to abstain from voting on the resolutions at the 2020 AGM. There was no restriction for any Shareholders on casting votes for any of the resolutions at the 2020 AGM.

Consideration of the resolutions at the 2020 AGM

As considered by Shareholders and their respective proxies attending the 2020 AGM, relevant resolutions were voted by way of a combination of on-site voting and online voting. The voting results of the 2020 AGM are set out as follows:

2 Resolution For Against Abstain Whether or No. Details of resolution Type of votes Number % Number % Number % not passed Ordinary Resolutions 1 To consider and approve A Shareholders 483,370,349 99.9949 24,700 0.0051 – – Passed the report of the board of H Shareholders 359,336,595 100 – – – – directors for 2020 All Shareholders 842,706,944 99.9971 24,700 0.0029 – – 2 To consider and approve A Shareholders 483,370,349 99.9949 24,700 0.0051 – – Passed the report of the H Shareholders 359,336,595 100 – – – – supervisory committee for 2020 All Shareholders 842,706,944 99.9971 24,700 0.0029 – – 3 To consider and approve A Shareholders 483,370,349 99.9949 24,700 0.0051 – – Passed the annual report for 2020 H Shareholders 359,336,595 100 – – – – (including the financial statements for 2020) All Shareholders 842,706,944 99.9971 24,700 0.0029 – – 4 To consider and approve A Shareholders 483,377,649 99.9964 17,400 0.0036 – – Passed the proposal for profit H Shareholders 359,034,595 99.9160 302,000 0.0840 – – distribution for 2020 All Shareholders 842,412,244 99.9621 319,400 0.0379 – – 5 To consider and approve A Shareholders 481,788,328 99.6676 1,606,721 0.3324 – – Passed the resolution on the H Shareholders 348,200,341 96.9009 11,136,254 3.0991 – – framework for the guarantee proposed to be All Shareholders 829,988,669 98.4879 12,742,975 1.5121 – – provided by the Company and its subsidiaries for the year ending 2021 and its amounts

3 In accordance with the relevant provision of the Company Law and the Articles of Association of the Company, the above resolutions are ordinary resolutions and were all passed by more than half of the total number of shares carrying voting rights held by those who attended the 2020 AGM in person or by proxies.

SCRUTINEER

Mr. Huang Rongguang of WUYIGE Certified Public Accountants LLP, the auditor of the Company, Mr. Xian Zexin and Ms. Li Yinhui, being two shareholder representatives of the Company, and Mr, Zhu Weibin, being the supervisor of the Company, were appointed as the scrutineers at the Meeting for the purpose of vote-taking.

WITNESS OF LAWYERS

The EGM was attended and witnessed by Mr. Chen Chongwu and Ms. Jiang Kaixin, lawyers from Jingguo Law Firm who had issued the legal opinion. The witnessing lawyers were of the opinion that: the convening and holding procedures of the 2020 AGM of the Company, the eligibility of the persons attending the 2020 AGM and the voting procedures for the 2020 AGM were in compliance with the stipulations of the Company Law of the PRC, the Rules of Procedures of Shareholders’ General Meeting of Listed Companies and the Articles of Association, and that the Meeting was lawful and valid.

2020 Final Dividends

The Company will distribute the 2020 final dividends of RMB234,642,058.75 (inclusive of applicable tax) or RMB1.66 (inclusive of applicable tax) per every 10 Shares based on the total number of 1,413,506,378 Shares of the Company.

Closure of Register of Members

In order to qualify shareholders for the 2020 final dividend, the register of members of the Company will be closed from 3 June 2021 to 8 June 2021(both days inclusive), during which period no transfer of shares will be registered. All completed transfer forms accompanied by the relevant share certificates must be lodged with the Company’s branch share registrar in Hong Kong, Hong Kong Registrars Limited, at Rooms 1712-16, 17th Floor, Hopewell Centre, 183 Queen’s Road East, Wan Chai, Hong Kong, not later than 4:30 p.m. on 2 June 2021. Shareholders whose names appear on the register of members of the Company on 8 June 2021 are entitled to receive the final dividend in cash for the year ended 31 December 2020.

Dividends payable to the holders of H Shares shall be paid in Hong Kong dollars. The amount of Hong Kong dollars payable shall be calculated on the basis of the mean of the middle rate of Renminbi to Hong Kong dollars as announced by The People’s Bank of China for the five trading days prior to the AGM, i.e. calculated at HKD1 to RMB0.82835.

4 The Company will appoint Bank of China (Hong Kong) Trustees Limited as the receiving agent in Hong Kong (the “Receiving Agent”) and will pay to such Receiving Agent the final dividends declared for payment to holders of H Shares. The Receiving Agent will pay the final dividends on or about Friday, 23 July 2021. Relevant cheques will be despatched on the same day to holders of H Shares entitled to receive such dividends by ordinary post and at the risk of shareholders.

Enterprise Income Tax Withholding of Overseas Non-Resident Enterprises and Individual Income Tax Withholding of Overseas Individual Shareholders

Pursuant to the Enterprises Income Tax Law of the PRC (《中華人民共和國企業所得稅法》 ) and the relevant regulations, a PRC domestic enterprise shall be responsible for withholding and paying enterprises income tax and be the obligor with respect to the said withholding and payment in the case where that PRC domestic enterprise pays dividend to corporate shareholders which are established in overseas. Accordingly, the Company is obliged to withhold and pay the 10% enterprise income tax when paying the 2020 final dividends to the Registered Shareholders which are corporate shareholders established in overseas. For H shares of the Company registered other than in the name(s) of individual(s), including HKSCC Nominees Limited, other nominees, trustees, or other organization or groups, shall be deemed to be shares held by non-resident enterprise shareholder(s). On such basis, 10% enterprise income tax shall be withheld from dividends payable to such shareholder(s).

Pursuant to the Individual Income Tax Law of the PRC (《中華人民共和國個人所得稅法》 ) and the relevant regulations, the Company is obliged to withhold and pay a 10% individual income tax when paying the final dividends to the Registered Shareholders who are individuals. However, if there are contrary provisions containing in laws and regulations on taxes and agreements on collection of taxes entered into between the PRC and the relevant countries or districts, the withholding and payment of individual income tax by the Company when paying the final dividend to the Registered Shareholders who are individuals will be undertaken in accordance with those laws and regulations or agreements.

Shareholders who are in doubt in respect of the abovementioned arrangement may seek advice from their taxation or other appropriate advisers.

5 Profit Distribution to Investors of Northbound Trading

For investors of the (including enterprises and individuals) investing in the A shares of the Company listed on the Stock Exchange (the “Northbound Trading”), their dividends will be distributed in RMB by the Company through the Shanghai Branch of China Securities Depository and Clearing Corporation Limited to the account of the nominees holding such shares. The Company will withhold and pay income taxes at the rate of 10% on behalf of those investors and will report to the tax authorities for the withholding. For investors of Northbound Trading who are tax residents of other countries and whose country of domicile is a country which has entered into a tax treaty with the PRC stipulating a dividend tax rate of lower than 10%, those enterprises and individuals may, or may entrust a withholding agent to, apply to the competent tax authorities of the Company for the entitlement of the rate under such tax treaty. Upon approval by the tax authorities, the paid amount in excess of the tax payable based on the tax rate according to such tax treaty will be refunded. The record date and the date of distribution of dividends and other arrangements for the investors of Northbound Trading will be the same as those for the holders of A shares of the Company.

Profit Distribution to Investors of Southbound Trading

For investors of the (including enterprises and individuals) investing in the H shares of the Company listed on the Hong Kong Stock Exchange (the “Southbound Trading”), the Company has entered into “the Agreement on Distribution of Cash Dividends of H shares for Southbound Trading” (港股通H股股票現金紅利派發協議) with the Shanghai Branch of China Securities Depository and Clearing Corporation Limited, pursuant to which, the Shanghai Branch of China Securities Depository and Clearing Corporation Limited, as the nominee of the holders of H shares for Southbound Trading, will receive all cash dividends distributed by the Company and distribute the cash dividends to the relevant investors of H shares of Southbound Trading through its depositary and clearing system. The cash dividends for the investors of H shares of Southbound Trading will be paid in RMB. Pursuant to the relevant requirements under the “Notice on the Tax Policies Related to the Pilot Program of the Shanghai-Hong Kong Stock Connect” (關於滬港股票市場交易互聯互通機制試點有關稅收政策的通知) (Caishui [2014] No. 81), for dividends received by domestic investors from investing in H shares listed on the Hong Kong Stock Exchange through Shanghai-Hong Kong Stock Connect, the company of such H shares shall withhold and pay individual income tax at the rate of 20% on behalf of the investors. For dividends received by domestic securities investment funds from investing in shares listed on the Hong Kong Stock Exchange through Shanghai-Hong Kong Stock Connect, the tax payable shall be the same as that for individual investors. The company of such H shares will not withhold and pay the income tax of dividends for domestic enterprise investors and those domestic enterprise investors shall report and pay the relevant tax themselves. The record date and the date of distribution of dividends and other arrangements for the investors of Southbound Trading will be the same as those for the H Shareholders of the Company.

6 All investors are requested to read this announcement carefully. Shareholders are recommended to consult their taxation advisors regarding their holding and disposing of H Shares of the Company for the PRC, Hong Kong and other tax effects involved.

By order of the Board CSSC Offshore & Marine Engineering (Group) Company Limited Li Zhidong Company Secretary

Guangzhou, 27 May 2021

As at the date of this announcement, the Board comprises ten Directors, namely executive Directors Mr. Han Guangde, Mr. Chen Liping and Mr. Xiang Huiming; non-executive Directors Mr. Chen Zhongqian, Mr. Chen Ji and Mr. Gu Yuan; and independent non-executive Directors Mr. Yu Shiyou, Mr. Lin Bin, Mr. Nie Wei and Mr. Li Zhijian.

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