Anton Oilfield Services Group — Proxy Solicitation & Information Statement 2016

Jul 8, 2016

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FORM OF PROXY FOR THE EXTRAORDINARY GENERAL MEETING TO BE HELD ON Tuesday, 26 July 2016

I/ We (Name)

of (Address) being the holder(s) of

(Block capitals, please)

(Note 1) shares of HK$0.10 each in the share capital of Anton

Oilfield Services Group (the “ Company ”) hereby appoint (Name)

of (Address)

or failing him/her (Name)

of (Address)

or failing him/her, the chairman of the meeting (Note 2) as my/our proxy to attend and vote for me/us and on my/our behalf at the Extraordinary General Meeting of the Company to be held at No. 8 Pingcui West Road, Donghuqu, Chaoyang District, Beijing on Tuesday, 26 July 2016 at 10:00 a.m., and at any adjournment thereof or on any resolution or motion which is proposed thereat. My/our proxy is authorised and instructed to vote as indicated (Note 3) in respect of the undermentioned resolutions:

ORDINARY RESOLUTION (Note 3)FORAGAINSTTo approve, confirm and ratify the agreement dated 16 May 2016 entered into between the Company,Anton International Services Company International Limited, a wholly-owned subsidiary of theCompany, Anton Oilfield Services DMCC, an indirect wholly-owned subsidiary of the Company,華油惠博普科技股份有限公司(China Oil HBP Science & Technology Co., Ltd.) and Hong Kong HuihuaGlobal Technology Limited (香港惠華環球科技有限公司) and the transactions contemplated thereunder.

Date this day of , 2016 Signature(s) (see Note 5)

Notes:

1. Please insert the number of shares registered in your name(s); 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. A member may appoint more than one proxy of his/her own choice. If such an appointment is made, strike out the words “the chairman of the meeting”, and insert the name(s) of the person(s) appointed as proxy in space provided. Any alteration made to this form of proxy must be initialed by the person who signs it.

3. IMPORTANT: IF YOU WISH TO VOTE FOR ANY RESOLUTION, PLEASE PUT A TICK “ � ” IN THE BOX MARKED “For”. IF YOU WISH TO VOTE AGAINST ANY RESOLUTION, PLEASE PUT A TICK “ � ” IN THE BOX MARKED “Against”. Failure to put a tick “�” in a 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 resolution properly put to the meeting other than those referred to in the notice convening the meeting.

4. If the appointor is a corporation, this form must be under common seal or under the hand of an officer, attorney, or other person duly authorised on that behalf.

5. In the case of joint holders, the signature of any one holder will be sufficient but the names of all the joint holders should be stated.

Where there are joint holders of any share of the Company, any one of such joint holders may vote at the meeting, either in person or by proxy, in respect of such share as if he/she were solely entitled thereto, but if more than one of such joint holders be present at the meeting, the vote of the senior who tenders a vote, whether in person or by proxy, will be accepted to the exclusion of the votes of the other joint holders, and for this purpose seniority shall be determined as that one of the said persons so present whose name stands first on the register in respect of such share shall alone be entitled to vote in respect thereof.

1. To be valid, this form of proxy must be completed, signed and deposited at the Company’s Branch Share Registrar in Hong Kong, Computershare Hong Kong Investor Services Limited, at 17M Floor, Hopewell Centre, 183 Queen’s Road East, Wanchai, Hong Kong, together with the power of attorney or other authority (if any) under which it is signed (or a notarially certified copy thereof), not less than 48 hours before the time for holding the meeting. The completion and return of the form of proxy shall not preclude shareholders of the Company from attending and voting in person at the above meeting (or any adjourned meeting thereof) if they so wish.

2. A proxy need not be a shareholder of the Company.