Translation CEN 034-2018 November 13, 2018 Subject : Management Discussion and Analysis for quarter 3-2018 To : The Manager and President The Stock Exchange of Thailand Business operation for 3

1 / 4 No.IR.002/2018 22 February 2018 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

offering of warrant to purchase ordinary shares of the Company to existing shareholders and joint ventures in subsidiary. (Edited) To: The President The Stock Exchange of Thailand Enclosure 1. Capital

Thailand and expenses related to the Stock Exchange of Thailand, (2) THB 0.60 million decrease from professional fees, (3) THB 0.42 million decrease from accounting and audit fees, and (4) absence of THB

51-E 1/2 RC 51/18 8 August 2018 Subject : Report on the Company’s operating results for the second quarter of the year 2018 Attention : President of the Stock Exchange of Thailand The Board of

Microsoft Word - MD&A 2Q17 EN August 15, 2017 To President, The Stock Exchange of Thailand Subject Notification on the difference of revenue from sales and net profit YOY by more than 20 percent

Our Ref: APURE 022/2022 15 August 2022 Subject Clarification on Second Quarter’s Operating Performance (2/2022) Attn. To President The Stock Exchange of Thailand The company clarifies causes and

ที่ FPI Ref. FPI.001/2020 25 February 2020 Subject : Management Discussion & Analysis of Performance Results of the year ended 2019 To : Board of Directors and President of The Stock Exchange of

debt instruments (surveillance report – on a monthly basis)) ✓ ✓ 1. Database of SET Smart (the summary of trading and important statistics on debt instruments and bonds from the Stock Exchange) 3

January 9th, 2020 To : Managing Director The Stock Exchange of Thailand Re : The acquisition of investment in Vibharam Co.,Ltd.’s new ordinary shares, and elder ordinary share which purchases from