the private placement basis, and the schedule for 2019 Annual General Meeting of Shareholders To: President The Stock Exchange of Thailand Reference: Notification of East Coast Furnitech Public Company

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Ref. DBP. 024 / 2020 February 25, 2020 Subject : Clarification on Operating Results of Year 2019 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its

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ที่ กตพ Ref. DBP. 073 / 2019 May 13, 2019 Subject : Clarification on Operating Results for the 1st quarter ending March 31, 2019 To : President The Stock Exchange of Thailand Diamond Building

right to purchase, or to convert those securities into, shares of such business; (2) “Business” means a company whose shares are listed on the Stock Exchange; (3) “SEC Notification No. KorChor. 53/2545

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Bangchak Corporation Plc. Management Discussion & Analysis of Business Operation For the quarter ended September 30th, 2019 Management Discussion and Analysis of Business Operation for Q3/2019

., and Schedule for the EGM of Shareholders No. 1/2019 (Revised) To: The President The Stock Exchange of Thailand Enclosure: 1. Information Memorandum of Hydrotek Public Company Limited on Disposal of

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