- 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

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

ที่บชง Page 1 of 4 Ref. Bor Chor Ngor 0140 /2020 13 May 2020 Subject: Management Discussion and Analysis for the First Quarter ended 31 March 2020 To President The Stock Exchange of Thailand Quality

Microsoft Word - ACE MDA Q320 - ENG 1 No. ACE-ACC-4/2020 13 November 2020 Subject Management Discussion and Analysis for the period ended 30 September 2020 To President The Stock Exchange of Thailand

(October – December 2018) and clarification of the operating result change excess 20%. Dear Sirs, We gladly inform to report our 2nd quarter performance figure during October – December 2018, ending December

respectively due to the result of cost of good sold management and decrease of costs of sales. Information of M.2017 Consolidated Separate 9 months Change months Change 2017 2016 Amount % 2017 2016 Amount

No. B52-2020-05/002 7 May 2020 Subject: Management Discussion and Analysis - for the three-month period ended 31 March 2020 To: The President of Stock Exchange of Thailand B-52 Capital Public Company