China BlueChemical : FIRST LETTER

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

22 September 2017 Dear Shareholders,

We are pleased to enclose the English and Chinese versions of the 2017 Interim Report of the Company for your attention.

Pursuant to the applicable laws, regulations and the articles of association of the Company, the Company is permitted to allow its H share shareholders to elect:

1. to receive the Corporate Communication(Note) via the Company's website (www.chinabluechem.com.cn); or

2. to receive the English language version only, the Chinese language version only, or both the English and Chinese language versions of any Corporate Communication.

To make your election, please complete, sign and return the enclosed Reply Form, in the envelope provided, to the Company c/o its H share registrar, Computershare Hong Kong Investor Services Limited, 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong.

If we do not receive the Reply Form from you by 20 October 2017 and until you inform the Company c/o its H share registrar by reasonable notice in writing according to the relevant laws and regulations, only a printed Chinese version of any Corporate Communication will be sent to you if you are an H share shareholder who is a natural person with a Chinese name and has an address in Hong Kong appearing on the register of members of the Company. Otherwise, we will only send you a printed English version of any Corporate Communication.

You are entitled at any time by giving reasonable prior written notice to the Company c/o its H share registrar to change your choice of language and means of receiving Corporate Communications. Even if you have elected to access the Corporate Communications by electronic means through the Company's website but for any reason have difficulty in accessing the relevant Corporate Communication electronically, or wish to receive printed copies, the Company will promptly upon receiving your request send the printed form to you free of charge.

Please note that: (i) printed copies of the English and Chinese language versions of all Corporate Communication will be available from the Company or its H share registrar on request; and (ii) the same will also be available on the Company's website at www.chinabluechem.com.cn and the HKEXnews website (www.hkexnews.hk).

Should you have any questions relating to this letter, please call our hotline at (852) 2862 8555 during business hours from 9 : 00 a.m. to 6 : 00 p.m. from Monday to Friday, excluding Hong Kong public holidays.

Yours faithfully, For and on behalf of

Company Secretary

Note: Corporate Communications refer to any document issued or to be issued by the Company to its H share shareholders including (without limitation) the annual report, interim report, notice of meeting, listing document, circular and proxy form.

* For identification purpose only