No. WPH-SET 9/2019 August 9, 2019 Subject : The expansion of Wattanapat Samui Hospital project To : Director and Manager The Stock Exchange of Thailand Enclosure: The Acquisition and Disposition of

Ref.No.IVL001/08/2019 8th August 2019 President The Stock Exchange of Thailand Subject: Acquisition of Integrated Oxides and Derivatives Businesses/ Assets Enclosure: Information concerning the Acquisition of

May 12, 2020 has resolved to approve the Company’s subsidiary, Cal- Comp Precision Holding Co., Ltd.’s (“CCPT-KY”) initial public offering plan (the “IPO Plan”) to be listed in the Taiwan Stock Exchange

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

ที่ กตพ Ref. DBP. 030 / 2019 February 20, 2019 Subject : Clarification on Operating Results of Year 2018 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited

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

Ref. DBP. 025 / 2018 February 21, 2018 Subject : Clarification on operating results of Year 2017 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its

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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