MD&A Eng Q1-19 13-5-19 _1_ 1 Translation UWC 014-2019 May 14, 2019 Subject : Management Discussion and Analysis for quarter 1-2019 To : President of the Stock Exchange of Thailand Ua Withya Public

Transaction through the Stock Exchange of Thailand as attached herewith and deliver an information memorandum containing specified information required by the Acquisition or Disposition Transaction Notification

subsidiaries Ref. PDI/BK-BS-008/2020 20th February 2020 Re: Management Discussion and Analysis (MD&A) For the year ended December 31, 2019 To: President The Stock Exchange of Thailand Padaeng Industry Public

Bangkok, April 21, 2014 ? The SEC jointly with the National Science and Technology Development Agency (NSTDA), the Stock Exchange of Thailand (SET), the Thai Business Incubators and Science Parks

1 Translation CEN 015-2019 November 14, 2019 Subject : Management Discussion and Analysis for business operation in Quarter 3-2019 To : The Manager and President The Stock Exchange of Thailand

Transactions Deemed as Acquisition or Disposal of Assets. The Company has a duty to disclose the disposal of the assets to the Stock exchange of Thailand (SET) and to deliver the information as specified in the

1 / 4 IR.013/2018 19 July 2018 Re: The Information of a Disposition of Assets (Land sale) (Amendment) To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the

to deliver gold to the foreign bank at the agreed quantity and price. Under the agreement, in case Tungkum fails to deliver gold, THL will be obliged to pay the compensation for the difference between

being obliged to prepare a report, disclose the information memorandum on the entering into of the transaction with the Stock Exchange, and deliver the notice of the entering into of the transaction to

, resulting in the Company being obliged to prepare a report, disclose the information memorandum on the entering into of the transaction with the Stock Exchange of Thailand (the “Stock Exchange”), and deliver