หนังสือแสดงการรับทราบความผิด 11 August 2017 Subject : Management Discussion and Analysis of Second quarter ended 30 June 2017 Attn. : Director and Manager The Stock Exchange of Thailand Encls. : A

MDA Q3_2017 (Eng.) November 8, 2017 Subject : Interim Management Discussion and Analysis of Q3/2017 Attention : President of The Stock Exchange of Thailand We attach herewith the financial statements

Page 1 of 4 No. RJH – SET 14/2017 10 November 2017 Subject : Management Discussion and Analysis for the 3rd Quarter of 2017 ending 30 September 2017 To : The President The Stock Exchange of Thailand

MDA 2017 (Eng.) February 20, 2018 Subject : Yearly Management Discussion and Analysis of 2017 Attention : President of The Stock Exchange of Thailand We attach herewith the financial statements of

MD&A Q1_2019 (Eng ) May 2, 2019 Subject : Interim Management Discussion and Analysis of Q1/2019 Attention : President of The Stock Exchange of Thailand We attach herewith the financial statements of

MDA Q2_2019 (Eng ) August 9, 2019 Subject : Interim Management Discussion and Analysis of Q2/2019 Attention : President of The Stock Exchange of Thailand We attach herewith the financial statements

ที่บชง Page 1 of 4 Ref. Bor Chor Ngor 0280/2019 13 August 2019 Subject: Management Discussion and Analysis for the Second Quarter ended 30 June 2019 To President The Stock Exchange of Thailand

หนังสือแสดงการรับทราบความผิด 14 August 2019 Subject : Management Discussion and Analysis of the second quarter 2019 ended 30 June 2019 Attn. : Director and Manager The Stock Exchange of Thailand

MDA Q2_2018 (Eng.) August 7, 2018 Subject : Interim Management Discussion and Analysis of Q2/2018 Attention : President of The Stock Exchange of Thailand We attach herewith the financial statements

หนังสือแสดงการรับทราบความผิด 14 August 2018 Subject : Management Discussion and Analysis of the second quarter 2018 ended 30 June 2018 Attn. : Director and Manager The Stock Exchange of Thailand