15, 2019 Subject: MD&A for the financial statements of the 1st quarter of fiscal year 2019 ended as of March 31, 2019 To: The President The Stock Exchange of Thailand Aapico Hitech Public Company

as at 31 March 2018 Page 2 of 3 T.K.S. TECHNOLOGIES Statements of Financial Position and Cash Flows (con’t) Shareholders’ Equity of company at end of March 2018 represented of THB 2,547 mil., increased

Price (THB./ton) 20,942 18,695 HRC Cash Margin (THB./Ton) 1,937 3,327 Unit: million Baht 31 March 2018 31 December 2017 Fin an cia l St at us Total Liabilities 5,789 5,492 Total Asset 20,209 19,546 Total

15 May 2018 Subject: Management Discussion and Analysis for the 3-Month Period Ended March 31, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

used year Transaction date March 2018 Transaction amount RMB 118,094 or approximately Baht 587,623.93 Pricing policy At Book value (transaction amount) and near market value Payment term By cash with 90

Palmer & Turner (Thailand) Ltd MJD.IR.014/2561 15 May 2018 Subject : Clarification of the operating result for the year 2018 ended March 31, 2018 To : Director and Manager The Stock Exchange of

resolution of the connected transaction as follows: Date of agreement: Company Date of agreement AEON Financial Service Co., Ltd. (“AFS”) Within March 31, 2019 Agreement period is one year from April 2018 to

2020, ended 31 March 2020, that have been accordingly reviewed by the Company’s external auditor and by the Audit Committee at the meeting No.2/2020 held on 8 May 2020. Also, on this occasion, the

Microsoft Word - MDA Q120 EN_Hiight.docx May 11, 2020 To President The Stock Exchange of Thailand Subject Management Discussion and Analysis for the three-month period ended March 31, 2020 Taokaenoi

หนังสือแสดงการรับทราบความผิด 14 May 2020 Subject : Management Discussion and Analysis of the first quarter 2020 ended 31 March 2020 Attn. : Director and Manager The Stock Exchange of Thailand Encls