(especially China), causing The competition is very high in term of price while the economy is in recession and the company is still losing money from the exchange rate compared to the US dollar (the company's
derived from the management service income and the trading income which was recognized for the first time in year 2018. 2018 2017 Change % Change Revenue 1,672.58 1,580.25 92.32 6% Cost 1,509.05 1,335.73
20,289.88 29,668.73 (9,378.85) (31.61) Other income 741.35 365.86 375.49 102.63 Total revenues 21,031.23 30,034.59 (9,003.36) (29.98) Cost of construction services and sales of construction materials
% 38.0 129.4% Total revenues from sales and services 156.3 100.0% 165.1 100.0% 8.9 5.7% Cost of Rental 115.2 73.7% 8.7 5.3% -106.5 -92.5% Cost of Sales 19.8 12.7% 45.0 27.2% 25.1 126.7% Total cost of sales
total cost of sale respectively. An increasing in cost-of-sale was derived from the rise of average steel-coil price, which the average steel-coil price is in the upward trend since 2016. ZIGA INNOVATION
respectively. (2) Cost of sales In 2019, the Company and its subsidiaries had total cost of sales at the amount of Baht 2,004.25 million, which increased from the year 2018 by Baht 90.27 million or 4.72% due to
many projects although the Company has already been hired. A subsidiary has increased work deliveries in the amount of Baht 29.47 million compared to the same period of previous year. (2) Cost of sales
is effective in 2019. 2.2 The decreasing gross profit margin in the remaining portion comes from the indirect cost, which is a fixed cost, was not decreased in the same direction of the sales. Gross
/2018 Increase / (decrease) %change Sale income 499.82 76.03 423.79 557.40% Other income 1.69 1.21 0.48 39.67% Total income 501.51 77.24 424.27 549.29% Selling cost 452.77 67.28 385.49 572.96% Cost of