23 April 2018 At: ACC/HO 016/61 Re: Management Discussion and Analysis for the three-month period ended 31 March 2018 To: President The Stock Exchange of Thailand During the first quarter of 2018 the

Exchange of Thailand. Demco Public Company Limited would like to inform you herewith the company result of the 2nd quaternary for the year 2017 according to the company’s financial statement ended June 30

president, The Stock Exchange of Thailand. Demco Public Company Limited would like to inform you herewith the company result of the 3rd quaternary for the year 2017 according to the company’s financial

February 28, 2019 Subject: Managing Discussion and Analysis for Year2018 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and

1 Translation CEN 004-2019 February 27, 2019 Subject Management Discussion, analysis and business operation of year 2018 To The Manager and President The Stock Exchange of Thailand Yearly business

วันที่ 14 สิงหาคม 2550 DEMCO Public Company Limited No. Demco AC002/2019 May 14, 2019 Subject : The company’s operating result for the 1st quarter of year 2019 To : The president, The Stock Exchange

: President The Stock Exchange of Thailand CH. Karnchang Public Company Limited (“the Company”) and its subsidiaries would like to clarify the consolidated operating result and financial position for the three

Exchange of Thailand. Demco Public Company Limited would like to inform you herewith the company result for the 2nd quarter of year 2019 according to the company’s consolidated financial statement ended June

1 Ref: CK-18-0000-AFD(AC)-L-0039 August 14, 2018 Subject: Clarification on Operating Result and Financial Position for the six-month ended June 30, 2018 Attention: President The Stock Exchange of

August 14, 2018 Subject: Managing Discussion and Analysis for Q2/2018 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and