CSSC Offshore & Marine Engineering : ANNOUNCEMENT ON AN ADDITIONAL RESOLUTION TO BE PROPOSED AT THE THIRD EXTRAORDINARY GENERAL MEETING OF 2020 TO BE CONVENED ON FRIDAY, 23 OCTOBER 2020

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(a joint stock company with limited liability incorporated in the People's Republic of China)

（H Shares Stock Code: 00317）

ANNOUNCEMENT ON AN ADDITIONAL RESOLUTION TO BE PROPOSED AT

THE THIRD EXTRAORDINARY GENERAL MEETING OF 2020 TO BE

CONVENED ON FRIDAY, 23 OCTOBER 2020

On 28 August 2020, CSSC Offshore & Marine Engineering (Group) Company Limited (the "Company") issued a notice convening the Third Extraordinary General Meeting of 2020 at the Conference Room of the Company, 15/F, Marine Tower, 137 Gexin Road, Haizhu District, Guangzhou, the People's Republic of China (the "PRC") at 10:00 a.m. on Friday, 23 October 2020 (or any adjournment thereof) (the "Third EGM").

In accordance with the applicable laws such as the Company Law of the PRC and the Rules of Procedures of Shareholder's General Meeting of Listed Companies as well as the Articles of Association of the Company, shareholder(s) individually or in aggregate holding more than 5% of the shares of the Company shall have the right to propose additional resolution(s) prior to the general meeting. On 9 September 2020, the Company requisition from China State Shipbuilding Corporation Limited, the controlling shareholder of the Company which holds directly and indirectly 59.52% of the shares of the Company, regarding the additional resolution in relation to the Supplemental Agreement to 2020 to 2022 Framework Agreement relating to the Continuing Connected Transactions and the Revised Annual Caps.

In accordance with the applicable laws and regulations and the Articles of Association, the Board proposed such additional resolution (which is an ordinary resolution) to be considered at the Third EGM.

Save as above, there were no other matters to be brought to the attention of the shareholders of the Company.

A supplementary notice of the Third EGM containing, among others, the aforementioned additional resolution (the "Supplementary Notice") together with a new proxy form (the "Revised Proxy Form") and a circular containing, among others, details of the additional resolution are expected to be

despatched to the H shareholders of the Company on or before 8 October 2020.

H shareholders are requested to complete and return the Revised Proxy Form in accordance with the instructions printed thereon to the Company's H share registrar, Hong Kong Registrars Limited, at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong as soon as possible but in any event not later than 24 hours before the time appointed for the holding of the Third EGM (i.e. before 10:00 a.m. on 22 October 2020). Special arrangements for the completion and return of the Revised Proxy Form are also set out in the Supplementary Notice. H shareholders who have appointed or intend to appoint any proxy to attend the Third EGM are requested to pay particular attention to the

special arrangements set out therein.

By order of the Board

CSSC Offshore & Marine Engineering (Group) Company Limited

Li Zhidong

Company Secretary

Guangzhou, 10 September 2020

As at the date of this announcement, the Board comprises eleven Directors, namely executive Directors Mr. Han Guangde, Mr. Chen Zhongqian, Mr. Chen Liping, Mr. Sheng Jigang, Mr. Xiang Huimin and Mr. Chen Ji, non-executive Directors Mr. Shi Jun, and independent non-executive Directors Mr. Wang Yichu, Mr. Min Weiguo, Mr. Liu Renhuai and Mr. Yu Shiyou.