\(Microsoft Word - 7 \\301\\244.61 _Eng_.doc\) January 7 th , 2019 To : Managing Director The Stock Exchange of Thailand Re : The acquisition of investment in Vientiane International Hospital Co.,Ltd

\(Microsoft Word - 7 \\301\\244.61 _\\341\\241\\351\\344\\242_ Eng.doc\) January 7 th , 2019 To : Managing Director The Stock Exchange of Thailand Re : The acquisition of investment in Vientiane

August 30th, 2019 To : Managing Director The Stock Exchange of Thailand Re : The acquisition of investment in Nan-Ram Hospital Co.,Ltd. The board of directors of Ramkhamhaeng Public Co.,Ltd. held on

AC 52/07-003 ACC1/19-056 11 November 2019 Subject : The Purchase of the Ordinary Shares of Duwell Intertrade Co., Ltd. To: Director and Managing Director The Stock Exchange of Thailand Qualitech

condition. Simultaneously, Kiatichai, Suraphong (managing director and authorized person for trading in the NPP securities trading account), NPP, Rinnapa whose beneficiary in her securities account was

August 14, 2019 Subject: Managing Discussion and Analysis for Q2/2019 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and

May 15, 2020 Subject: Managing Discussion and Analysis for Q1/2020 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and

November 13, 2019 Subject: Managing Discussion and Analysis for Q3/2019 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and

, Chonburi  20230 Thailand    Tel. 66‐38 480‐020‐1 FAX. 66‐38 480‐080  Please be informed accordingly. Yours faithfully, (Mr. Sommat Khunset) Managing Director 11) Transaction Type : The Transaction as stated

Page 1 of 3 AC6302/004 February 26, 2020 Subject Clarification of the operating results for the year end ended December 31, 2019 To Director/ Managing Director The Stock Exchange of Thailand