Analysis for the second quarter ended June 30, 2020 are different from the same period last year more than 20% To: The President, The Stocks Exchange of Thailand World Corporation Public Company Limited

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

T.K.S. TECHNOLOGIES 1 March 2021 Re: Management Discussion and Analysis for the period ended 31 December 2020 To: President The Stock Exchange of Thailand T.K.S. Technologies Public Company Limited

February 28th, 2020 Subject : Clarification of the net profit of the year 2019, which has changed over 20 % in comparison to the Year 2018 To : The director of the Stock Exchange of Thailand

73 1 / 4 (Translation) Ref. MD.005/2020 28th February 2020 Subj Management Discussion and Analysis (MD&A) of 2019 Dear Managing Director of Stock Exchange of Thailand We, Patum Rice Mill and Granary

-Translation- NO. ED-MD2020-0009 March 12th, 2020 Subject: Notification of Acquisition Assets To: Director and General Manager The Stock Exchange of Thailand Enclosed Report Eureka Design Public

and Managers, The Stock Exchange of Thailand The Board of Directors’ Meeting of Halcyon Technology PLC. (the “Company”) had passed the resolution to convene the 2020 Annual General Meeting of

Exchange of Thailand According to the Board of Directors Meeting of the Company No. 2/2020, which held on 6 March 2020, Panjawattana Plastic Public Company Limited (“the Company”) was resolved to hold the

-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

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