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

February 26, 2018 To: The President The Stock Exchange of Thailand Re: 2017 operating results We, Delta Electronics (Thailand) Public Company Ltd, would like to notify the Company’s 2017 operating

Limited. The Company has already registered the changes to the Department of Business Development, Ministry of Commerce on April 17, 2019. In this regard, the Company still uses the same stock symbol “RATCH

Q3/17 Q4/17 Q1/18 Q2/18 Q3/18 Sales Revenue Net Profit Unit: Million Baht Page 2 3. Results of Operations and Profitability Consolidated (Unit: Million Baht) Q3/2018 Q3/2017 %YoY 9M/2018 9M/2017 %YoY

2020 To : The President The Stock Exchange of Thailand Bangkok Chain Hospital Public Company Limited (the “Company”) would like to report the operating results for the first quarter ended 31 March 2020

June 2020 To : The President The Stock Exchange of Thailand Bangkok Chain Hospital Public Company Limited (the “Company”) would like to report the operating results for the second quarter ended 30 June

SAAM Energy Development Public Company Limited - 1 - 13 February 2019 Subject: Management Discussion and Analysis for the year ended 31 December 2018 To: The President The Stock Exchange of Thailand

- ร่าง - 1 May 28, 2019 Subject Management Discussion and Analysis for the year ended 31st March 2019 To President of the Stock Exchange of Thailand Secretary of the Office of Securities and Exchange

- ร่าง - 1 May 28, 2018 Subject Management Discussion and Analysis for the year ended 31st March 2018 To President of the Stock Exchange of Thailand Secretary of the Office of Securities and Exchange

-1 1 Ref. LPN/SorKor/119/2563 7th May 2020 Re: Financial Statements Analysis Report Q1/2020 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co.,Ltd. would like to submit the