วันที่ 25 กุมภาพันธ์ 2558 August 14, 2019 Subject: Management’s Explanation and Analysis for the 3 months and 6 months period ended June 30, 2019 Attention: Director and Manager The Stock Exchange of

1 Ref: AC.021/2018 14 August 2018 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

operating results of the third quarter of 2018, ended 30 September 2018 To Director and Manager The Stock Exchange of Thailand The Board of Director’s meeting No. 7/2018 of General Engineering Public Company

1 Ref: AC.028/2018 13 November 2018 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

วันที่ 25 กุมภาพันธ์ 2558 November 14, 2019 Subject: Management’s Explanation and Analysis for the 3 months and 9 months period ended September 30, 2019 Attention: Director and Manager The Stock

วันที่ 25 กุมภาพันธ์ 2558 August 14, 2020 Subject: Management’s Explanation and Analysis for the 3 months and 6 months period ended June 30, 2020 Attention: Director and Manager The Stock Exchange of

1 Translation CEN 015-2019 November 14, 2019 Subject : Management Discussion and Analysis for business operation in Quarter 3-2019 To : The Manager and President The Stock Exchange of Thailand

1 Translation CEN 013-2019 August 14, 2019 Subject Management discussion and analysis for business operation Quarter 2-2019 To The Manager and President The Stock Exchange of Thailand Operating

1 Translation CEN 031-2018 August 14, 2018 Subject : Management Discussion and Analysis for business operation of Quarter 2-2018 To : The Manager and President The Stock Exchange of Thailand Business

Translation DIMET AC 2008/001 August 31, 2020 Subject Management Discussion and Analysis for business operation year 2019 (July 1, 2019 - June 30, 2020) To The Manager and President The Stock