Ref. MD 115/2017 August 25, 2017 Re: Clarification on the Financial Performance of the Company and its subsidiaries as of Year 2015 Attn: President The Stock Exchange of Thailand We, K. C. Property

(Translation) No. MD119/2560 August 29, 2017 Re: Clarification on the Financial Performance of the Company and its subsidiaries as of Year 2015 Attn: President The Stock Exchange of Thailand We, K. C

12 December 2017 Subject: Resolutions of Board of Directors Meeting No. 14/2017 Attention: President Stock Exchange of Thailand Enclosures: 1. Information Memorandum on Asset Disposal, Transaction No

1 Translation CEN 012-2019 May 14, 2019 Subject Management discussion and analysis for business operation Quarter 1-2019 To The Manager and President The Stock Exchange of Thailand For 3 months

MDE05_22May18 (Translation) No.15/2018 May 22, 2018 President The Stock Exchange of Thailand Re: Notification of the Resolution of the Board of Directors’ Meeting No. 5/2018 We, AEON Thana Sinsap

1 / 3 IR.013/2018 19 July 2018 Re: The Information of a Disposition of Assets To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the “Company”) would like

1 -Translation- Ref :IR 62/023 December 23, 2019 Subject: Change in Shareholding Structure of Subsidiary Company (edit no.2 ) To: President, The Stock Exchange of Thailand T.K.S. Technologies Public

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