Anton Oilfield Services : CLOSURE OF REGISTER OF MEMBERS FOR EXTRAORDINARY GENERAL MEETING

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

Reference is made to the announcement of Anton Oilfield Services Group (the "Company") on 13 April 2016 and 5 May 2016 (the "Announcements") in relation to the Supplemental Agreement to revise the annual caps for the continuing connected transactions contemplated under the 2015 Master Agreement with Schlumberger. Unless the contexts require otherwise, capitalised terms used in this announcement shall have the same meanings as those defined in the Announcements.

The board of directors (the "Board") of the Company hereby announces that for determining the list of Shareholders who are entitled to attend and vote at the extraordinary general meeting (the "EGM") of the Company to be held immediately after the conclusion of the annual general meeting of the Company which is scheduled to be held on Thursday, 26 May 2016, the shareholders' register of the Company will be closed from Tuesday, 24 May 2016 to Thursday, 26 May 2016, both days inclusive. No transfer of shares of the Company will be registered during that day. The notice and circular for the EGM will be despatched on 11 May 2016. In order to qualify to attend and vote at the EGM, all instruments of transfer together with the relevant share certificate(s) must be lodged with the Company's branch share registrar in Hong Kong, Computershare Hong Kong Investor Services Limited, Shops 1712-1716, 17th Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong for registration no later than 4:30 p.m. on Monday, 23 May 2016.

Hong Kong, 9 May 2016

By order of the Board

Chairman

As at the date of this announcement, the executive Directors are Mr. LUO Lin, Mr. WU Di and Mr. PI Zhifeng; and the independent non-executive Directors are Mr. ZHANG Yongyi, Mr. ZHU Xiaoping and Mr. WANG Mingcai.