IGG Inc — AGM Information 2025

Apr 14, 2025

NOC

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)

Reply Slip for Annual General Meeting

I/(We) ____________

of (address) ____________

telephone number: ________ and fax number: __________

being the holder(s) of ____________ H share(s)/ domestic share(s)* of China BlueChemical Ltd. (the “Company”) hereby confirm that I (We) wish to attend or appoint a proxy to attend (on my/(our) behalf) the 2024 annual general meeting (“AGM”) to be held at the 10th Floor Meeting Room, Yihai International, Haikou, the PRC on Thursday, 29 May 2025 at 9:00 a.m.

Signature(s): ____________

Date: _______ 2025

Note: Shareholders who intend to attend the AGM in person or by proxy should return the reply slip in person, by post or by fax to the Company’s Secretary Office of the Board of Directors in China (for holders of domestic shares) or Computershare Hong Kong Investor Services Limited (for holders of H shares) on or before Friday, 9 May 2025. The Company’s Secretary Office of the Board of Directors in China is Room 1707, Kaikang CNOOC Mansion, No. 15, Sanqu, Anzhenxili, Chaoyang District, Beijing, the PRC (Tel: 0086-10-84527250, Fax: 0086-10-84527254, Post code: 100029). The address of Computershare Hong Kong Investor Services Limited is 17M Floor, Hopewell Centre, 183 Queen’s Road East, Wanchai, Hong Kong.

• Please delete as appropriate. Domestic shares means unlisted shares issued by the Company to domestic investors for subscription in Renminbi; H shares means overseas listed foreign shares.

• For identification purpose only