China BlueChemical Ltd. — Proxy Solicitation & Information Statement 2026

Apr 13, 2026

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中海石油化学股份有限公司 China BlueChemical Ltd.

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

(Stock Code: 3983)

Proxy Form for 2025 Annual General Meeting

Number of shares related to this proxy form (note 1)	H shares/domestic shares (note 2)

I/(We) (note 3)

of

being the holder(s) of __ H share(s)/domestic share(s) (note 2) of China BlueChemical Ltd. (the "Company") now appoint (note 4) __ (I.D. No.:)

of

or failing him, the Chairman of the meeting as my (our) proxy to attend and vote for me (us) on the resolutions in accordance with the instructions below and on my (our) behalf at the 2025 annual general meeting ("AGM") to be held at the 3rd Floor Meeting Room, Yihai International, Haikou, the PRC on Thursday, 28 May 2026 at 9:00 a.m. for the purpose of considering and, if thought fit, passing those resolutions as set out in the notice convening the said meeting.

By way of Ordinary Resolution		For (note 5)	Against (note 5)
1.	To consider and approve the report of the board of directors of the Company (the “Board”) for the year ended 31 December 2025.
2.	To consider and approve the audited financial statements and the auditors’ report of the Company for the year ended 31 December 2025.
3.	To consider and approve the proposal for distribution of profit of the Company for the year ended 31 December 2025 and the declaration of the Company’s final dividends.
4.	To consider and approve the re-appointment of Mazars ZSZH Certified Public Accountants LLP and Forvis Mazars CPA Limited as the domestic and overseas auditors of the Company, respectively, for the year of 2026 with a term until the conclusion of the next annual general meeting of the Company and to authorise the audit committee of the Board to determine their remuneration.
By way of Special Resolution		For (note 5)	Against (note 5)
5.	To consider and approve the amendments to the rules of procedure for the Board.
6.	To consider and approve the granting of a general mandate to the Board to issue domestic shares and overseas listed foreign shares (the “H Shares”) of the Company.
7.	To consider and approve the granting of a general mandate to the Board to repurchase H Shares.

Date: _____ 2026

Signature: _____ (note 4)

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Notes:

(1) Please insert the number of shares registered in your name(s) to which the proxy relates. If no number is inserted, this form of proxy will be deemed to relate to all the shares in the capital of the Company registered in your name(s).

(2) Please insert the type of shares (domestic shares or H shares) to which the proxy relates. Domestic shares means unlisted shares issued by the Company to domestic investors for subscription in Renminbi; H shares means overseas listed foreign shares.

(3) Please insert the full name(s) (in Chinese or in English, as shown in the register of members) and registered address(es) in BLOCK LETTERS.

(4) A shareholder entitled to attend and vote at the meeting may appoint one or more proxies to attend and vote in his/her stead. A proxy need not be a shareholder of the Company. Where a shareholder has appointed more than one proxy to attend the meeting, such proxies may only vote on a poll.

The instrument appointing a proxy must be in writing under the hand of a shareholder or his/her attorney duly authorised in writing. If the shareholder is a corporation, that instrument must be either under its common seal or under the hand of its attorney or duly authorised attorney(s). If that instrument is signed by an attorney of the shareholder, the power of attorney authorising that attorney to sign or other authorisation document must be notarised.

To be valid, this proxy form together with the power of attorney or other authorisation document (if any) must be deposited at the Company’s Secretary Office of the Board in China (Address: Room 1707, Kaikang CNOOC Mansion, No. 15, Sanqu, Anzhenxili, Chaoyang District, Beijing, the PRC) (in respect of holders of domestic shares) not less than 24 hours (i.e., by 9:00 a.m., Wednesday, 27 May 2026) before the time fixed for holding the meeting. In order to be valid, the said documents together must be lodged at the Company’s H share registrar within the abovementioned period by holders of H shares. Completion and return of this proxy form will not preclude a shareholder from attending and voting in person at the meeting if she/he so wishes. The H share registrar of the Company is Computershare Hong Kong Investor Services Limited, whose address is 17M Floor, Hopewell Centre, 183 Queen’s Road East, Wanchai, Hong Kong.

(5) IMPORTANT: IF YOU WISH TO VOTE FOR ANY RESOLUTION, TICK IN THE BOX MARKED “FOR”. IF YOU WISH TO VOTE AGAINST ANY RESOLUTION, TICK IN THE BOX MARKED “AGAINST”. Failure to tick the box will entitle your proxy to cast your vote at his/her discretion. Your proxy will also be entitled to vote at his/her discretion on any resolutions properly put to the AGM other than those referred to in the notice convening the AGM.

(6) For full text of the above resolutions, please refer to the notice of the AGM dated 13 April 2026.

(7) Shareholders or their proxies must present proof of their identities upon attending the AGM. Should a proxy be appointed, the proxy must also present copies of his/her proxy form, or copies of appointing instrument and power of attorney, if applicable.

(8) The AGM is expected to last not more than one day. Shareholders or proxies attending the AGM are responsible for their own transportation and accommodation expenses.

• For identification purpose only