Extraordinary General Meeting of the Shareholders No. 1/ 2 5 6 1 , Plans for listing CAZ (Thailand) Co., Ltd. on the Market of Alternative Investment (mai) – Revised 3 Attention The President The Stock Exchange

Extraordinary General Meeting of the Shareholders No. 1/ 2 5 6 1 , Plans for listing CAZ (Thailand) Co., Ltd. on the Market of Alternative Investment (mai) – Revised 4 Attention The President The Stock Exchange

1 - TRANSLATION - KT/PB (Q-Con) 001/2020 February 13, 2020. Attention Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for year 2019 Quality Construction

1 11 February 2020 Subject: Explanation of operating result in the financial statement ended 31 December 2019 To: President of the Stock Exchange of Thailand With reference to the financial statement

companies certified by CAC. 4  The Stock Exchange of Thailand : the record of listed companies with corporate sustainable development "Thai sustainability Investment 2021" included: SET and mai listed

corporate sustainable development "Thai sustainability Investment 2021" included: SET and mai listed companies passed the assessment conducted by the Stock Exchange of Thailand: THSI (SET) and THSI (mai) SET

February 28, 2020 Subject: Managing Discussion and Analysis for Year2019 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and

August 14th, 2020 Subject : Clarification of the performance of the second quarter 2020, which has changed over 20 % in comparison to the year 2019. To : The director of the Stock Exchange of

Stock Exchange of Thailand Enclosure: Information Memorandum regarding the Acquisition of Asset of Demeter Corporation Public Company Limited The Meeting of the Board of Directors No. 8/2017 of Demeter

running the multiple regression analysis. A sample group was collected from share prices of companies listed on the Stock Exchange of Thailand during 2004 ?2013 where the finding showed out that the stock