No. EXE 003-2-18 22th February 2018 Re: Explanation of Performance of the Financial Statements as at 31 December 2017 Attention: President The Stock Exchange of Thailand Venture Incorporation Public

Reef:020/1999 Ref : 11/2018 February 26, 2018 Subject : The explanation of operating results for the year of 2017 To : The SET President Vibhavadi Medical Center Plc. hereby submits a copy of its

President The Stock Exchange of Thailand K.C. Metalsheet Public Company Limited (“the Company”) would like to clarify the operating result of the financial statement as follows: year 2016 year 2017 Change

2.59 million baht to the loss of 12.84 million baht) due to the reasons mentioned above Yours Sincerely, Kittiphat Suthisamphat Executive Vice President

set-q4-61 (Translation) Ref.No.LEE 02/2019 27 February, 2019 Subject : Management Discussion and Analysis for the year ended December 31, 2018 To : President of The Stock Exchange of Thailand We

(Translation) IR 003/19 February 27, 2019 President and Director The Stock Exchange of Thailand Subject : To explain the

2017 to 17.98 million baht in 2018) as aforesaid. Yours Sincerely, Kittiphat Suthisamphat Executive Vice President

May 13, 2019 SET-19-AC-002 Dear The President The Stock Exchange of Thailand Subject: Clarification of Result’s Operation for the three months ended March 31, 2019 According to the resolution of

13 May 2019 Subject: Management Discussion and Analysis for the Quarter 1 Ending 31 March 2019 Attention: President Stock Exchange of Thailand Please find below the additional information supporting

Writer Ref. No. 066/2562 14 May 2019 SUBJECT : Management Discussion and Analysis ending 31 March 2019 ATTN : The President Stock Exchange of Thailand The Company realized profit for the first