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

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

-9320 Ref: PLC 2020/008 April 7, 2020 Subject: Postponement of the 2020 Annual General Meeting of Shareholders ("AGM") and Notice of interim dividend agenda consideration To: The President of the Stock

Provincial Waterworks Authority Attention: Directors and Managers The Stock Exchange of Thailand CC: Secretary-General of the Office of the Securities and Exchange Commission, Thailand Attachment: Map of 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

สรุปผลการดำเนินงานของบจ -Translation- May 11th, 2020 Subject: Management Discussion and Analysis for Quarter 2/FY2020 To: Managing Director The Stock Exchange of Thailand Inoue Rubber ( Thailand