วันที่ 14 สิงหาคม 2550 DEMCO Public Company Limited No. Demco AC002/2018 February 28, 2018 Subject : The company’s operating result of the year 2017. To : The president, The Stock Exchange of

หนังสือแสดงการรับทราบความผิด 28 February 2018 Subject : Management Discussion and Analysis of the year ended 31 December 2017 Attn. : Director and Manager The Stock Exchange of Thailand Encls. : A

law on concerning agricultural futures trading; (18) international financial institution; (19) Deposit Protection Agency; (20) Stock Exchange of Thailand; (21) juristic person in the category of

failure of computer systems used for trading securities by companies which are members of the Stock Exchange of Thailand. If the incident results in no ability in recording an offer for trading come from

the Stock Exchange of Thailand. If the incident results in no ability in recording an offer for trading come from variuos companies into a trading system at the same time and last longer than a period

following matters: (a) disseminating and sending information of foreign ETF to relevant persons, for example governmental organization or authority, the Stock Exchange of Thailand or unit holders of foreign

: EIC-AD008/2019 February 27, 2019 Subject: Management Discussion and Analysis Yearly Financial Period Ending 31 December 2018 To: President The Stock Exchange of Thailand The Board of Directors of

: President The Stock Exchange of Thailand CH. Karnchang Public Company Limited (“the Company”) and its subsidiaries would like to clarify the consolidated operating result and financial position for the year

February 28, 2019 Subject: Managing Discussion and Analysis for Year2018 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and

which exceed 20% 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 2018