Acc. 004/2019 August 8, 2019 To: The President The Stock Exchange of Thailand Subject: Management discussion and analysis (MD&A) for Quarter 2/2019 Dear Sir, S. Khonkaen Foods Public Company Limited

: The President The Stock Exchange of Thailand Bangkok Chain Hospital Public Company Limited (the “Company”) would like to report the operating results of the Company and its subsidiaries (collectively as

-Translation- 1 -Translation- Ref. NCH 028/2019 August 9, 2019 Subject : Management’s Discussion and Analysis 2Q/2019 Attention : President The Stock Exchange of Thailand N.C. Housing Plc. (“the

analysis for the three-month period ended June 30, 2019 To: Director and Manager of the Stock Exchange of Thailand Referring to the submission of reviewed financial statements for quarter 2/2019 of Wiik

No. CC20190804ELE August 13, 2019 Re: Clarification of the changes in operation performance for the second quarter and the first half ended 30 June, 2019 Attn: The President The Stock Exchange of

results for the six-month period of 2019, change of rate more than 20 percent Dear Director and Manager The Stock Exchange of Thailand According to the resolution of the Board of Directors of DOD Biotech

-TRANSLATION- 14 August 2019 Subject : Management Discussion and Analysis for Q2/2019 Attention : President The Stock Exchange of Thailand An overview of the results in the passing The performance in

วันที่ 14 สิงหาคม 2550 DEMCO Public Company Limited No. Demco AC003/2019 August 14, 2019 Subject : The company’s operating result for the 2nd quarter of year 2019 To : The president, The Stock

Microsoft Word - MD&A_Q2_2019_EN 14.8.19 1 NPPG.050/2562 August 14th, 2019 Subject Management’s analysis for the 2nd quarter of 2019 Attn. The President The Stock Exchange of Thailand Management’s

and analysis for the period ended March 31, 2018 To Director and Manager of the Stock Exchange of Thailand Referring to the submission of the reviewed financial statements for quarter 1/2018 of Wiik