Microsoft Word - I-!9%*#8˙I-*ˇ@( Blue Sky 20200929 EN_MDA Quarterly - Translation - 1 ACC-O-2010004 October 1, 2020 To: President The Stock Exchange of Thailand Subject: Management Discussion and

1 Translation CEN 001-2021 March 1, 2021 Subject Management Discussion and Analysis for the year 2020 To The Manager and President The Stock Exchange of Thailand Capital Engineering Network Public

October 11, 2019 Re: Clarification of the operating results of company and its subsidiaries for the year ended as at December 31, 2018 To: President The Stock Exchange of Thailand K.C. Property

-1- AIT (VP-SEC) 025E/2023 August 10, 2023 Subject: Management's Discussion and Analysis of Operating Results for Q2-2023 To: The President of the Stock Exchange of Thailand Summary of Operations Q2

  March 20, 2018 Subject The amendment of Information Memorandum on Acquisition of Assets To President The Stock Exchange of Thailand According, Bangkok Dec-con Public Company Limited has reported

Ref. DBP. 153 / 2019 November 11, 2019 Subject : Clarification on Operating Results for the 3rd quarter and 9-month Period ending September 30, 2019 To : President The Stock Exchange of Thailand

would like to disclose information on the said transaction to the Stock Exchange of Thailand (“SET”) in accordance with the Acquisition or Disposal Notification as follows: 1. Date / Month / Year of the

Ref. DBP. 068 / 2018 May 14, 2018 Subject : Clarification on operating results for the 1st Quarter ending March 31, 2018 To : President The Stock Exchange of Thailand Diamond Building Products Public

but not limited to Undertaking Agreement. The highest size of Disposition of Assets Transaction is not exceeding THB 1,503.80 million or equivalent to 36.39% pursuant to the total value of consideration

Determination of the Date of Extraordinary General Meeting of Shareholders No. 1/2018 To: President The Stock Exchange of Thailand Enclosures: 1. Information Memorandum on the Offering of Newly Issued Ordinary