August 11, 2020 Subject : Management Discussion and Analysis for Six-month and 2nd quarter ended June 30, 2020 Attention : President The Stock Exchange of Thailand Operating Performance 1. Revenues

ที ่B52-2020-08/001 14 August 2020 Subject: Management Discussion and Analysis - for the three-month period ended 30 June 2020 To: The President of Stock Exchange of Thailand B-52 Capital Public

2020 2019 Change 2020 2019 Change Engineering 106 127 (21) 18 (2) 20 17.2% -1.2% 18.4% Management 235 203 33 22 18 4 9.4% 8.9% 0.5% Solar energy 33 32 0 16 15 0 47.9% 47.3% 0.6% Trading - 21 (21) - 3 (3

results. 3 Months 2019 2018 Change 2019 2018 Change 2019 2018 Change Engineering 127.48 164.88 (37.40) (1.52) 16.19 (17.71) -1.2% 9.8% -11.0% Management 202.84 189.91 12.93 18.11 17.63 0.48 8.9% 9.3% -0.4

28th February 2020, Management Discussion and Analysis Attention: President of the Stock Exchange of Thailand, Eason Paint Public Company Limited (EASON) reported the Statement of Comprehensive

transparent and fair management in line with international standard good governance guidelines, we are building trust and confidence of in all parties involved, including stakeholders and market participants

- Translation - MPIC 018/2019 August 7, 2019 Subject: Submit the Financial Statement for the quarter ended June 30, 2019 and clarification for the change of operating result more than 20% Attention

@halcyon.co.th No. CS-2563/014 14 August 2020 Subject: Management Discussion and Analysis for the 6-Month Period Ended 30 June 2020 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology

ที่บชง Page 1 of 4 Ref. Bor Chor Ngor 0154 /2018 10 May 2018 Subject: Management Discussion and Analysis for the First Quarter ended 31 March 2018 To President The Stock Exchange of Thailand Quality

ที่บชง Page 1 of 4 Ref. Bor Chor Ngor 0048/2020 26 February 2020 Subject: Management Discussion and Analysis of Operating Results for Fiscal Year 2019 To President The Stock Exchange of Thailand