AIT (SVP-SEC) 015E/2016 May 9, 2017 Subject: Management's Discussion and Analysis of Operating Results for Q-2016 To: The President of The Stock Exchange of Thailand Summary of Operations Q1- 2016

2017 Change % Change Revenue 849.62 707.22 142.40 20% Cost 721.26 596.69 Gross profit 128.36 110.53 17.83 16% Gross profit margin 15.11% 15.63% Other income 0.24 3.80 (3.56) -94% Selling expenses 1.89

ที่บชง Page 1 of 4 Ref. Bor Chor Ngor 0268/2020 10 August 2020 Subject: Management Discussion and Analysis for the Second Quarter ended 30 June 2020 To President The Stock Exchange of Thailand

Microsoft Word - 4_SEC account 3-%0@ˆ5"ˇ_@˙%5H"ˇA˙%_20211124 - kdraft V2.docx 1 Application for Registration / Change of Information in SEC Account Date: ……………………………….. Attn: Secretary-General The

29_MDA Q3_62 EN -Translation- No. ECF2 041/2019 November 14, 2019 Subject: Management Discussion and Analysis of the 3rd quarter ended September 30, 2019 To President The Stock Exchange of Thailand

- Translation – MPIC 007/2018 May 09, 2018 Subject: Submit the Financial Statement for the quarter ended March 31, 2018 and clarification for the change of operating result more than 20% Attention

- Translation - MPIC 007/2019 February 13, 2019 Subject: Submit the Year End Financial Statement ended December 31, 2019 and clarification for the change of operating result more than 20% Attention

- Translation - MPIC 002/2020 February 17, 2020 Subject: Submit the Year End Financial Statement ended December 31, 2019 and clarification for the change of operating result more than 20% Attention

- Translation - MPIC 011/2017 August 9, 2017 Subject: Submit the Financial Statement for the quarter ended June 30, 2017 and clarification for the change of operating result more than 20% Attention

- Translation – MPIC 016/2019 May 08, 2019 Subject: Submit the Financial Statement for the quarter ended March 31, 2019 and clarification for the change of operating result more than 20% Attention