Details of the costs involving to the WTGs foundation improvement for Huay Bong 2&3 Wind Farm at September 30, 2017 are as shown in the table. Description Estimated total improvement cost (until year 2016

foundation improvement for Huay Bong 2&3 Wind Farm as at December 31, 2017 are as shown in the table. Description Estimated total improvement cost (as of year 2016) Estimate and cost for accounting recorded in

81.93 million of 1st quarter of year 2018. Sales and administrative expenses (Special entry) was Baht 18.59 million result from compensation for loss of production cost which increased comparing to the

for loss of production cost which increased comparing to the compensation of Baht 8.19 million of 2nd quarter of year 2018. DEMCO Public Company Limited Details of the costs involving to the WTGs

. Details of the costs involving to the WTGs foundation improvement for Huay Bong 2&3 Wind Farm as at March 31, 2018 are as shown in the table. Description Estimated total improvement cost (as of year 2017

from compensation for loss of production cost which increased comparing to the compensation of Baht 18.18 million of 3rd quarter of year 2018. DEMCO Public Company Limited Details of the costs involving

% from last year and total revenues of 1,845.12 million Baht which also increased 16.82% from last year. This was mainly due to market and product expansion resulting to higher business volume. 2. Cost of

year. The changing over than 20% from the main causes as follows: 1. Cost from decoration service at 1,399.37 million baht compared with last year at 1,117.53 million baht which increase 281.87 million

last year and total revenues of 1,579.40 million Baht which also increased 7.6% from last year. This was due to increase in aluminium price. 2. Cost of sales was 1,463.45 million Baht or at 93.65% of

strengthen against US Dollar, and increase in cost of sales Please be informed Yours sincerely, (Ms. Sineemas Sotpiparpnukul) Chief Executive Officer Authorized Director