Ref. DBP. 099 / 2017 August 15, 2017 Subject : Clarification on

Ref. DBP. 141 / 2017 November 13, 2017 Subject : Clarification on Operating Results for the 3-Month Period and 9-Month Period ending September 30, 2017 To : President The Stock Exchange of Thailand

ที่ กตพ Ref. DBP. 108 / 2019 August 13, 2019 Subject : Clarification on Operating Results for the 2nd quarter and 6-month Period ending June 30, 2019 To : President The Stock Exchange of Thailand

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

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

. The objective of this MD&A is to present the information and the explanation of financial status and operating results as of the date hereof. However, the information provided in this MD&A may vary if

Ratio 59.33 % 50.68 % 47.12 % Analysis and Explanation of Management 1. Result of Performance and Financial Status 1.1. Overall of Performance and Financial Status in the Past In 2017 the Company had

explanation of calculation methods on setting up such assumptions. 8. Where there has been any material change to the issuer’s accounting policies, provide a summary of the material change and the reason for

DCORP 025/2020 May 13, 2020 Subject: Management Discussion and Analysis – Explanation of net profit for the quarter ended March 31, 2020 and the increase in the overall operations of more than 20 percent

DCORP 041/2020 August 13, 2020 Subject Management Discussion and Analysis – Explanation of net profit for the quarter ended June 30, 2020 and the increase in the overall operations of more than 20 percent