The board of directors of China BlueChemical Ltd. announced that Ms. Wu Xiaoxia has resigned as the company secretary of the Company due to other work commitment with effect from 5 January 2023. The Board is announced that Mr. Kuang Xiaobing and Ms. Ng Sau Mei have been appointed as the joint company secretaries of the Company with effect from 5 January 2023. The biographical details of Mr. Kuang and Ms. Ng are set out below.

Mr. Kuang, born in 1967, obtained a master's degree from Beijing Business College (currently known as the Beijing Technology and Business University) in 1997, majoring in enterprise management. He was qualified as a senior economist. From September 1986 to August 1991, he studied in the department of engineering physics of Tsinghua University, majoring in nuclear and thermal energy utilization.

From August 1991 to September 1994, Mr. Kuang served as an assistant engineer at the No. 2 Institute of Nuclear Industrial Research and Design. From September 1994 to June 1997, he studied at Beijing Business College, majoring in enterprise management, and obtained a master's degree.

From June 1997 to May 1998, he worked as an economist in the financial department of China National Offshore Oil Corporation. From May 1998 to December 2000, he served as financial economist of Nanhai petrochemical project team of CNOOC. From December 2000 to August 2005, he served as the financing director of the finance department of CNOOC and Shell Petrochemical Company Limited.

From August 2005 to December 2011, he successively served as the director of corporate financial analysis and management, the senior director of investment and financing and debt risk management, and the head of financing and capital market division of the capital financing department of CNOOC China Limited. From December 2011 to October 2016, he successively served as the head of the financing division, the head of the limited financing and capital market division, and the deputy head of the financing division of the capital department of CNOOC. Since October 2016, he has served as the deputy general manager of the capital department of CNOOC and CNOOC Limited.

In November 2022, Mr. Kuang was appointed as the Company's vice president, chief financial officer, chief legal adviser and chief compliance officer. Ms. Ng, born in 1977, graduated with a bachelor's degree from City University of Hong Kong in 2001 majoring in laws and obtained a master's degree in laws from University of London in the United Kingdom in 2017. She became an associate member of The Hong Kong Chartered Governance Institute and The Chartered Governance Institute (formerly known as The Institute of Chartered Secretaries and Administrators) in the United Kingdom in 2007 and a fellow member in 2019.

She is a director of the Listing Services Department of TMF Hong Kong Limited and is responsible for provision of corporate secretarial and compliance services to listed company clients. She currently serves as the joint company secretary for various companies listed on the Main Board of the Stock Exchange, including China Reinsurance (Group) Corporation (stock code: 1508), The People's Insurance Company (Group) of China Limited (stock code: 1339) and China Oilfield Services Limited (stock code: 2883). Following her resignation, Ms. Wu ceased to be the authorised representative of the Company for the purpose of Rule 3.05 of the Listing Rules and Mr. Kuang has been appointed as the Authorised Representative with effect from 5 January 2023.