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

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

Ref. DBP. 066 / 2020 May 11, 2020 Subject : Clarification on Operating Results for the 1st Quarter ending March 31, 2020 To : President The Stock Exchange of Thailand Diamond Building Products Public

securities (Whitewash) from the Securities and Exchange Commission, and the investment partner process will be completed in July 2017. Certified Companies of Thailand's Private Sector Collective Action

1 --Translation-- Sor Gor 7/2018 January 19, 2018 Subject: Management Discussion and Analysis for the year ended December 31, 2017 (Unaudited) To: The President The Stock Exchange of Thailand

1 --Translation-- Sor Gor 11/2018 February 22, 2018 Subject: Management Discussion and Analysis for the year ended December 31, 2017 (Audited) To: The President The Stock Exchange of Thailand

and the common equity Tier 1 ratio of 20.06 percent and the total capital ratio of 23.46 percent which as the solid capital. In addition, the investment partner with CTBC Bank to accommodate the growth

disclosure in participation/ (cancellation) in equity of more than 10% - according to The Stock Exchange of Thailand regarding “rules, conditions and procedures for disclosure of information and other acts of

loss from crude oil hedging contract and loss on foreign exchange. Other important events in this quarter:  BCPG Plc. which is a subsidiary of the company, assessed the fair value of assets and

Company to entering into the Assets Sale and Purchase Agreement for Kitchen Plus Restaurant Franchise Business with Kitchen Plus 999 Co., Ltd. Attn.: President The Stock Exchange of Thailand NPPG (Thailand