Office of the Securities and Exchange Commission No. SorKhor/Nor. 37/2550 Re: Relaxation on Calculation and Announcement of Net Asset Value of Mutual Funds Investing in Equity Instruments Issued by PTT

specific permission of PTT is strictly prohibited with Future Energy and Beyond Powering Life ทิศทางกลยุทธ์ของ ปตท. CONFIDENTIAL & PROPRIETARY Any use of this material without specific permission of PTT is

Exchange Commission No. SorKhor/Nor. 37/2550 Re: Relaxation on Calculation and Announcement of Net Asset Value of Mutual Funds Investing in Equity Instruments Issued by PTT Public Company Limited By virtue

has carried out various undertakings in preserving the trustworthiness of financial reporting system and protecting investors. With respect to audit quality inspection, the results showed that in the 3

หนังสือออกภายนอก (Thai) 1 หน้า (Translation) Ref. 10000400/ 245 /17 November 30, 2017 Subject Notification of connected transaction relating to assets or service for the purchase of land from PTT

the correctness, completeness and trustworthiness of the financial reports of the company.  Opinions concerning the adequacy of the company’s internal control system.  Opinions concerning the

emphasis on, and strive to improve, the quality control in every element on a continued basis. This will help to promote audit quality and build trustworthiness of the financial reporting system of the Thai

remaining of ongoing projects from backlog of 2017 which main income such as PTT TANK project, PTT LNG Cold Water project, and PTT Wangnoi Compressor Station project (PTT WCS). The proportion of revenue

prohibited characteristics: (1) having deficiency in legal competency, being subject to legal action under the law governing supervision of capital market, or lacking trustworthiness as specified as prohibited

governing supervision of capital market, or lacking trustworthiness as specified as prohibited characteristic in Group 1 under Clause 29; (2) having a record of legally proceeding against or being punished