Assets and Connected Transaction for the Entire Business Transfer and Allocation of Securities to the Specific Investor (Private Placement) To The President The Stock Exchange of Thailand Attachment 1

2017 To : Directors and Manager The Stock Exchange of Thailand According to the resolution of the meeting of the Board of Directors No.8/2017 of Wattanapat Hospital Trang Public Company Limited (“the

-Translation- Ref. IR 62/005 March 13, 2019 Subject: Disclosure of the information regarding related party transaction (Additional Information) To : President, The Stock Exchange of Thailand T.K.S

/2 Energy Complex, Building B, 12th Floor, Vibhavadi Rangsit Road, Chatuchak, Chatuchak Bangkok10900 Phone 0-2196-5959 Fax   URL www.pttor.com Contact Person Contact Contact Name ฝ่ายผู้ลงทุนสัมพันธ์

., Ltd. To: President The Stock Exchange of Thailand Enclosure: Information Memorandum regarding the Acquisition of Asset of Demeter Corporation Public Company Limited The Meeting of the Board of Directors

2017 Subject: Notification of the Board of Directors No. 10/2017, Postponement of the date of the Extraordinary General Meeting of Shareholders No.1/2017 and the Record Date To: The President The Stock

Province of Planet Board Company Limited, which is a Subsidiary of the Company Attention President The Stock Exchange of Thailand Enclosure Information Memorandum on Acquisition of Assets of East Coast

Province of Planet Board Company Limited, which is a Subsidiary of the Company (Additional) Attention President The Stock Exchange of Thailand Enclosure Information Memorandum on Acquisition of Assets of

December 2019 To : The President The Stock Exchange of Thailand Bangkok Chain Hospital Public Company Limited (the “Company”) would like to report the operating results for year ended 31 December 2019 which

approving persons in the capital market (natural person/juristic person); 1.2 The Enterprise Content Management System (ECM) of the SEC Office. 2. The SEC Office receives your personal data submitted via a