Anton Oilfield Services : Notification Letter and Request Form to non-registered holders

23 September 2019

Dear Investor (Note) ,

Anton Oilfield Services Group (the "Company") - 2019 Interim Report (the "Current Corporate Communication")

We are pleased to inform you that the English and Chinese versions of the Current Corporate Communication are now available on Hong Kong Exchanges and Clearing Limited's website at www.hkexnews.hk and the Company's website at www.antonoil.com. You may access the Current Corporate Communication by clicking "Investor Relationship - Financial Information" on the homepage of the Company's website.

If you want to receive a printed copy of the Current Corporate Communication, please complete the request form (the "Request Form") on the reverse side and send it to the Company c/o the Company's Hong Kong share registrar, Computershare Hong Kong Investor Services Limited, by post using the mailing label at the bottom of the Request Form (no stamp is needed if posted in Hong Kong). The address of the Company's Hong Kong share registrar is 17M Floor, Hopewell Centre, 183 Queen's Road East, Wan Chai, Hong Kong. You may also send an email with a scanned copy of the Request Form to [e-mail]. The Company's Hong Kong share registrar will arrange to send the printed copy of the Current Corporate Communication to you upon receipt of the Request Form.

If you have any query about how to obtain a copy of the Current Corporate Communication or how to access the Current Corporate Communication on the Company's website, please contact us at (852) 2862 8688 during business hours from 9:00 a.m. to 6:00 p.m., Monday to Friday, excluding public holidays.

Yours faithfully,

Anton Oilfield Services Group

Note: This notification letter is being sent to the non-registered holders of the shares of the Company, whose shares are held in Central Clearing and Settlement System (CCASS) and who have notified the Company through Hong Kong Securities Clearing Company Limited that they wish to receive the Current Corporate Communication(s). If you have sold or transferred your shares in the Company, please disregard this notification letter and the Request Form enclosed.

致投資者 "附 註 "：

安東油田服務集團（「本公司」）－ 2019 年中期報告 ("本次公司通訊文件")

本公司欣然知會 閣下本公司之本 次 公 司 通 訊 文 件 的中、英文版本現已登載於香 港 交 易 及 結 算 所 有 限 公 司 之 披 露 易 網 站

• www.hkexnews.hk）及本公司網站（www.antonoil.com）。 閣下可於本公司網址首頁點擊「投資者關係 - 財務資料」, 即可下載及瀏 覽本次公司通訊文件。

倘 閣下欲收取本次公司通訊文件 之印刷本，請填妥在本函背面的申請表格（「申請表格」），並使用申請表格下方的郵寄標籤

寄回本公司之香港股份過戶處，香港中央證券登記有限公司（如在香港投寄則毋須貼上郵票），地址爲香港灣仔皇后大道東183號 合和中心17M樓。 閣下亦可把已填妥之申請表格的掃描副本電郵到 [e-mail]。本公司之香港 股份過戶處在收到

申請表格後會安排寄發 本次公司通訊文件的印刷本予 閣下。

倘 閣下對於如何索取本 次 公司 通訊 文 件 或如何在本公司網站上閱覽本次 公 司通 訊 文件 有任何疑問, 請致電本公司電話熱線(852) 2862 8688，辦公時間為星期一至五上午 9 時正至下午 6 時正（公眾假期除外）。

安東油田服務集團

謹啟

2019 年 9 月 23 日

附註：本通知函件收件對象為本公司非登記股份持有人。該等人士的股份存放於中央結算及交收系統（中央結算系統）及他們已經通過香港中央結算有限公司通知本公司， 希望收到本次公司通訊文件。如果 閣下已出售或轉讓所持有的本公司股份，則無需理會本通知函件及所附申請表格。

CCS6687AOSH_NRH

Request Form 申請表格

To: Anton Oilfield Services Group (the "Company")	致： 安東油田服務集團 (「本公司」)
(Stock Code: 3337)	（股份代號：3337）
c/o Computershare Hong Kong Investor Services Limited	經香港中央證券登記有限公司
17M Floor, Hopewell Centre,
香港灣仔皇后大道東 183 號
183 Queen's Road East,
合和中心 17M 樓
Wanchai, Hong Kong

I/We would like to receive a printed copy of the 2019 Interim Report of the Company as indicated below: 本人／我們希望以下列方式收取 貴公司之 2019 年中期報告之印刷本：

(Please mark ONLY ONE（X）of the following boxes)

(請從下列選擇中，僅在其中一個空格內劃上「X」號)

I/We would like to receive the printed English version. □ 本人／我們希望收取一份英文印刷本。

I/We would like to receive the printed Chinese version. □ 本人／我們希望收取一份中文印刷本。

I/We would like to receive both the printed English and Chinese versions. □ 本人／我們希望收取英文和中文各一份印刷本。

		Contact telephone
Signature		number		Date
簽名		聯絡電話號碼		日期

Notes 附註：

1. This Request Form is to be completed by the non-registered holders of the shares of the Company, whose shares are held in Central Clearing and Settlement System (CCASS) and who have notified the Company through Hong Kong Securities Clearing Company Limited that they wish to receive the Current Corporate Communication(s). Please complete all your details clearly.
   本申請表格應由本公司非登記股份持有人填寫。該等人士的股份存放於中央結算及交收系統（中央結算系統），他們並已經通過香港中央結算有限公司通知 本公司，希望收到本次公司通訊文件。請 閣下清楚填妥所有資料。
2. Any form with more than one box marked (X), with no box marked (X), with no signature or otherwise incorrectly completed will be void.
   如 在本表 格作出 超過一 項選擇 、或未有 作出選 擇、或 未有簽 署、或 在其他方 面填寫 不正確 ，則本 表格將 會作廢。
3. For the avoidance of doubt, we do not accept any special instructions written on this Request Form.
   為 免存疑 ，任何 在本申 請表格 上的額外 手寫指 示，本 公司將 不予處 理。

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	郵寄標籤 MAILING LABEL
閣下寄回此申請表格時，請將郵寄標籤剪貼於信封上。	香港中央證券登記有限公司
如在本港投寄毋須貼上郵票。	Computershare Hong Kong Investor Services Limited
Please cut the mailing label and stick this on the envelope	簡便回郵號碼 Freepost No. 37
to return this Request Form to us.
香港 Hong Kong
No postage stamp necessary if posted in Hong Kong.

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