from q-q, mainly caused by lower one - time revenues from High-Valued Document in Q1 19 of THB 56 mil and lower revenues from Stock forms & Office Paper Trading. Revenue Breakdown T.K.S. Technologies

1/2 L-WAVE ENT 20/2020 15 May 2020 Subject : Management’s Discussion and Analysis for the first quarter 2020 operating results with variation greater than 20% compared to the same period of 2019 To

- No. LMJG/SET/2020/019 August 10th, 2020 Subject: Clarification for the change of Operating Results more than 20% Attention: The President The Stock Exchange of Thailand Effects of the COVID-19

August 13 ,2020 Dear Director and The Manager of SET Re: Clarification on the Operating Result of Quarter 2/2020 Thailand economy’s condition of the quarter 2/2563 had a tendency to severely shrink

President The Stock Exchange of Thailand The Company wishes to present the Management Discussion & Analysis (MD&A) on the operating and financial status for the 2nd quarter of 2020. The MD&A would enable the

(Translation) Ref.No.LEE 11/2020 11 August, 2020 Subject : Management Discussion and Analysis for the second quarter ended June 30, 2020 To : President of The Stock Exchange of Thailand We submit

(Translated) August 11, 2020 Ref FSS 120/2020 Subject: Clarification of Company’s Operating Result for the six-month period ended June 30, 2020 To The President and Director The Stock Exchange of

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

Financial Statements for the year ended June 30, 2020 and the Management's Discussion and Analysis (MD&A) of Yong Thai Public Company Limited and its Subsidiaries. To Director and Manager, The Stock Exchange

-9320 Ref: PLC 2020/010 April 20, 2020 Subject: Payment of Interim Dividend and Schedule of the 2020 Annual General Meeting of Shareholders To: The President of the Stock Exchange of Thailand Panjawattana