ชี้แจงผลการดำเนินงานของบริษัทและบริษัทย่อยประจำปี 2549 UKEM004/2020 February 25, 2020 Subject : Management Discussion and Analysis of Business Operation results for Year 2019 To : Director and

MATI 13/2560 August 11, 2017 Subject Consolidated Financial Report for the six-month period which ended at June 30, 2017 To Director and Manager The Stock Exchange of Thailand Six-month period

หัวข้อ (Translation) No. Tor.For 17/2017 September 29, 2017 Subject : Progress of the decrease of registered capital of subsidiary Attention : The President of the Stock Exchange of Thailand The

MATI 19/2560 November 13, 2017 Subject Consolidated Financial Report for the nine-month period which ended at September 30, 2017 To Director and Manager The Stock Exchange of Thailand Nine-month

set-q3-60 (Translation) LEE 21/2017 14 November 2017 Subject : Management Discussion and Analysis for the third quarter ended September 30, 2017 To : President of The Stock Exchange of Thailand We

MATI 05/2562 February 27, 2019 Subject Reporting Annual Consolidated Financial Statement which ended at December 31, 2018 To Director and Manager The Stock Exchange of Thailand Operating income of

ชี้แจงผลการดำเนินงานของบริษัทและบริษัทย่อยประจำปี 2549 UKEM004/2019 February 27, 2019 Subject : Management Discussion and Analysis of Business Operation results for Year 2018 To : Director and

AC 52/07-003 ACC1/19-019 May 13, 2019 Subject: Management Discussion and Analysis Quarter 1 Ending March 31, 2019 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public

UKEM010/2019 May 13, 2019 Subject : Management Discussion and Analysis of Business Operation results for

set-q1-62 (Translation) Ref.No.LEE 07/2019 May 14, 2019 Subject : Management Discussion and Analysis for the first quarter ended March 31, 2019 To : President of The Stock Exchange of Thailand We