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

- Translation - MPIC 002/2020 February 17, 2020 Subject: Submit the Year End Financial Statement ended December 31, 2019 and clarification for the change of operating result more than 20% Attention

(Translation) Ref.No.LEE 01/2020 27 February, 2020 Subject : Management Discussion and Analysis for the year ended December 31, 2019 To : President of The Stock Exchange of Thailand We submit

19 เมษายน 2539 (TRANSLATION) Tor. For. 12 /2017 May 15, 2017 Subject : Operating Results for Q1/2017 To : President of the Stock Exchange of Thailand Attachment : Financial Statements for Q1/2017 Far

- Translation - MPIC 011/2017 August 9, 2017 Subject: Submit the Financial Statement for the quarter ended June 30, 2017 and clarification for the change of operating result more than 20% Attention

Samutprakarn, Samutprakarn 10280, Thailand Tel. 66 2323 1085..96 Fax. 66 2323 9283 (Translation) August 10, 2017 Subject: Management Discussion and Analysis (MD&A) of Q2/2017 To: Director and manager The Stock

, www.eurekadesign.co.th Tel: +66(0)2-192-3737 (Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 1 -Translation- No. ED-MD17-026 10 th August 2017 Subject : Clarification of changes in excess of 20% in the operating results

- Translation - LPH/SET/2017/024 October 2, 2017 Subject : Schedule for the date and agenda of the Extraordinary General Meeting of the Shareholders No.1/2017 (Revised) To : President The Stock

2 มิถุนายน 2554 620/5 Moo 11 Nongkham, Sriracha, Chonburi 20230 Thailand Tel. 66-38 480-020-1 FAX. 66-38 480-080 (TRANSLATION) AF. 029 / 2017 November 9, 2017 Subject Explanation of the operating

Microsoft Word - CS 2560-022 Q3 to SET (T_E) [ TRANSLATION ] Our Ref. JTS/CS-022/2560 November 13, 2017 Subject : Report on the Company’s operating results of the third quarter of the year 2017 To