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-Translation- NO. ED-MD2020-0004 February 24th, 2020 Subject: Clarification of changes in excess of 20% in the operating results for year ended 2017 To: Director and General Manager The Stock

(Translation) IR 003/20 February 28, 2020 President and Director The Stock Exchange of Thailand Subject : To explain the

Microsoft Word - Operating Result for the first quarter of 2017.doc SBN 016/2017 May 12, 2017 Subject : Operating Result for the first quarter of 2017 To : The Managing Director, the Stock Exchange

MergedFile Page 1 of 2 No. ACC6005/001 May 12, 2017 Subject: Explanation of Financial Performance for the Quarter 1/2017 ended March 31, 2017 To: President, The Stock Exchange of Thailand According

5, 2017 Subject: Disposal of investment in associate company To: The President The Stock Exchange of Thailand Aapico Hitech Public Company Limited (“the Company”) would like to announce that

1 - TRANSLATION - VS/PC (Q-Con) 026/2017 July 27th, 2017. Attention Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis the second quarter ended 30 June 2017

the 2nd Quarter of 2017 Ending June 30, 2017 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited (the Company) No. 4/2017

No CS11/2017 August 9, 2017 Attention President The Stock Exchange of Thailand Subject Declaration of Operating Results for the second quarter of year 2017 For the three-month period ended June 30

Translation August 9, 2017 Subject: Management explanation and analysis for Quarter ended 30 June 2017 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public Company Limited