November 1, 2017 Re: Clarification on Extension of the Acquisition and Subscription of Shares in Hero Experience Co., Ltd. To: President The Stock Exchange of Thailand As Demeter Corporation Public Company

%, according to the lower debt balance and exchange gain/loss on loans. For your information. Respectfully Yours, Mr. Pawat Vitoorapakorn Chief Executive Officer Eastern Polymer Group Public Company Limited

or 102.54%, according to the lower debt balance and exchange gain/loss on loans. For your information. Respectfully Yours, Mr. Pawat Vitoorapakorn Chief Executive Officer Eastern Polymer Group Public

Exchange of Thailand. The transaction does not require the approval from shareholders’ meeting. Please be informed accordingly. Yours Sincerely (Assoc.Prof.Chalerm Harnphanich, M.D.,Ph.D.) Chief Executive

ที่ BCH No.BCH.019/2018 26 February 2018 Subject : Approval of transaction with connected person (Additional) Attention : The President The Stock Exchange of Thailand The Board of Directors’ Meeting

1 / 2 IR.011/2019 14 May 2019 Re: Notification of the changes of the Profit and Loss Statement To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the

Microsoft Word - Eng-SET Q1-19 reviewed Ref: FASET 02/2562 May 15, 2019 Subject: Report the operating result for the first quarter ended March 31, 2019 To: President of the Stock Exchange of Thailand

May 15, 2019 Subject : Management Discussion and Analysis for quarter ended March 31, 2019 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1 Revenues Consolidated

Hero Experience Company Limited on Shareholding Proportion To: President The Stock Exchange of Thailand According to the fact that Demeter Corporation Public Company Limited (the “Company”) has invested

Hero Experience Company Limited on Shareholding Proportion (Revised) To: President The Stock Exchange of Thailand According to the fact that Demeter Corporation Public Company Limited (the “Company”) has