derived from the management service and engineering service.  Overall gross profit margin decreased from 17.0% to 11.9% amount Baht (16.37) million. 2019 2018 Revenue 443.24 406.54 36.70 9.0% Cost 390.30

year 2019 increased from 4.02% to 5.30% as compared to the same period of last year. The increase of gross profit margin was mainly due to differences in product mix and the impact derived from adoption

same period of last year. The gross margin of the nine-month period of year 2018 decreased from 5.72% to 4.50% as compared to the same period of last year. The decrease of gross profit margin for the

last year. The decrease in gross profit margin was mainly due to differences in product mix and that some of the new products’ implementation were postponed by the customers while the Company and its

nine-month period of year 2019 increased from 4.66% to 5.34% as compared to the same period of last year. The increased of gross profit margin for the nine-month period 2019 was mainly due to differences

(6,722) (5,037) (1,685) 33.5 Profit for the period 18,447 11,110 7,337 66.0 27,524 20,425 7,099 34.8 Gross profit margin 22.6% 23.6% (1.0%) 22.4% 23.6% (1.2%) Selling and distribution expenses per net

private construction work is less competitive and more flexible in negotiations. As a result, the company’s group has an average gross profit margin higher than that of the public sector. Administrative

929,354 (18,647) (2.01%) Gross profit margin 315,647 325,527 (9,880) (3.04%) Selling Expenses 91,735 88,001 3,734 4.24%) Admin Expenses 89,134 79,800 9,334 11.70%) Net profit 106,678 128,745 (22,067) (17.14

530.05 million baht, 679.75 million baht and 478.04 million baht in year 2020, 2021, and 2022 respectively. Gross profit margin is 26.76%, 29.81% and 22.60% for year 2020, 2021, and 2022 respectively. The

Baht) Q3/2017 Q3/2016 Change Revenue 186 227 (41) Gross profit margin 62 89 (27) Selling Expenses 17 28 (11) Administrative Expenses 18 19 (1) Finance cost 5 5 - Net profit 19 28 (9) In overall, the