ce , (-.") /.-0 (233) 183 HRC ( !"#!") 188 188 4 # HRC ( !"#!") 188 190 78 9: (-/#!") 17,403 17,469 H RC HRC Cash Margin (-/#!") 1,033 3,647 -0: 2-) 2 3 2560 31 - 3 2559 "9D/" 4,806 5,871 /"-! F

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

15 May 2019 Subject: Management Discussion and Analysis for the 3-Month Period Ended March 31, 2019 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

049-T 1/2 RC 049/60 10 ก 2560 ก!"#$"%&'( 3 #* 2560 ก'ก $+,!ก & !- ,ก,.-/#$% #$01'23$ก'ก45, ,(' &.0, "ก,! ('-0) (845,9:) 2,; 7/2560 '=, 10 ก 2560 ''&1',&4ก#$"%&'( 3 #* 2560 (;(1! 3 =, 30 ก, 2560

May 15, 2019 Subject : Management Discussion and Analysis for quarter ended March 31, 2019 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1 Revenues Consolidated

May 12, 2018 Subject : Management Discussion and Analysis for quarter ended March 31, 2018 Attention : President The Stock Exchange of Thailand 1. Operating Performance . Revenues (Thousands Baht

May 15, 2020 Subject : Management Discussion and Analysis for 1st quarter ended March 31, 2020 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1 Revenues Consolidated

-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 - MPIC 014/2017 November 8, 2017 Subject: Submit the Financial Statement for the quarter ended September 30, 2017 and clarification for the change of operating result more than 20

- Translation - MPIC 002/2018 February 14, 2018 Subject: Submit the Year End Financial Statement ended December 31, 2017 and clarification for the change of operating result more than 20% Attention