Notification of the Securities and Exchange Commission KorThor 17/2560 Rules, Conditions and Procedures for Applying for Licenses and Granting Licenses for Operating Securities Clearing House

Exchange of Thailand CAZ (Thailand) Public Company Limited (“the Company”) and its Subsidiary (“the Group”) would like to clarify the change in operating result for the 1stQuarter ended 31 March 2020, which

: The Company has little selling expense like previous quarter because the company produced for sale a little but mainly produce for tolling so selling expense of this quarter decreased by Baht 65 million

increase of revenue from office segment and management income • EBITDA stood at THB (93)mn, largely from the shortfall of revenue, partially relieved by lower operating costs and selling and administrative

the Company and its subsidiary for the three-month period ended 31 March 2018, which have been reviewed by the company’s authorized auditor. The company would like to clarify the operating results of

Company Limited (“the Company”) and its Subsidiary (“the Group”) would like to clarify the change in operating result for the 2nd Quarter ended 30 June 2020, which changed in revenue and net profit compared

. (Separate: The Company has little selling expense like previous quarter because the company produced for own sale a little but mainly produced for tolling so selling expense of this quarter decreased by Baht

Ref. DBP. 111 / 2020 August 10, 2020 Subject : Clarification on Operating Results for the 2nd quarter and 6-month period ending June 30, 2020 To : President The Stock Exchange of Thailand Diamond

. Corporate social responsibility 11. Internal control and risk management 12. Related transactions Part 3: Financial Position and Operating Results 13. Significant financial information 14. Management

operating results for the 3-month period and 6-month period ending June 30, 2017 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its Subsidiary (together