Discussion and Analysis For the year 2017 To The President of the Stock Exchange of Thailand Management’s Discussion and Analysis Consolidated Financial Results for the year 2017 For the year ended 31 December

Discussion and Analysis Quarter 3 Ended 30 Sep 2017 To The President of the Stock Exchange of Thailand Management’s Discussion and Analysis Consolidated Financial Results for the three-month and the nine-month

August 8, 2019 SET-19-AC-003 Dear The President The Stock Exchange of Thailand Subject: Clarification of Result’s Operation for the six months ended June 30, 2019 According to the resolution of BKD’s

November 11, 2019 SET-19-AC-004 Dear The President The Stock Exchange of Thailand Subject : Clarification of Result’s Operation for the nine months ended September 30, 2019 According to the

1 / 2 No.IR.006/2020 28 February 2020 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

1 / 2 No.IR.018/2020 14 May 2020 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited (the

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

M.D. 088/2020 June 12, 2020 Subject : Disclosure of the information connected transactions To : President of the Stock of Exchange of Thailand Kang Yong Electric Public Company Limited hereby notify

Currently, a significant volume of securities trading on the Stock Exchange of Thailand (SET) involves foreign investors, with most orders executed through foreign securities companies to Thai

will affect the internal control system and the good corporate governance and may lead to conflicts of interest.  In addition, it is forecast that GSTEL may incur additional expenses which will affect