names of recorded shareholders are entitled to the right to attend the Extraordinary General Meeting of Shareholders No. 1/2019 (Record Date) To: Director and Manager The Stock Exchange of Thailand

connected person, The Acquisition of Asset, Schedule for Extraordinary General Meeting No. 1/2019 To: The President The Stock Exchange of Thailand Attachments: 1. Information Memorandum on the Rectification

สารสนเทศข่าว มติ BOD 5-60 20171129En No. NDR013/2017 Subject Resolution of the Board of Directors’ Meeting To President The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the

paid up; “Stock Exchange” means the Stock Exchange of Thailand; “related person” means the related person under the Notification of the Capital Market Supervisory Board concerning the Related Party

securities trading system and other relevant systems of the Stock Exchange. Meanwhile, an information technology system is necessary for securities clearing houses and central securities depositories to

offer for all securities of the business; (8) “business” means a company whose securities are listed on the stock exchange, a company whose securities are traded in the securities trading center, or a

Amount and Term of Bond Issuance, and Determination of Date of the Extraordinary General Meeting of Shareholders No.1/2018 To: The President of the Stock Exchange of Thailand Enclosure: 1. Capital Increase

Energy Recovery Unit from Thai Oil Public Company Limited and entry into the relevant agreements (Edited) Attention: President Stock Exchange of Thailand Enclosure: Information Memorandum on Asset

purchasing securities or borrow securities for making a short sale is an authorized person to make securities trading decisions and has the ability to pay debt incurred from such trading. The securities

DCORP 023/2018 February 28, 2018 Subject: Report on the overall operation for year 2017 ended December 31, 2017 and the decrease in the overall operation more than 20 percent. Attention: President Stock