Other costs of goods sold mainly comprise warehouse rentals, utility charges and other expenses related to production. Gross Profit Considering gross profit, for the year ended 31 December 2017 and 2018
costs under concession agreements was of Bt1,505. 9 million which comprise of Into- plane substation project, Aviation Fuel pipeline equipment, Concession of a subsidiary and Right to use leased land
of cost of sales to sales revenue (%) 33.00 35.42 Gross Profit Margin (%) 67.00 64.58 Note: /1 Other costs of goods sold mainly comprise warehouse rentals, utility charges and other expenses related to
47.3% from December 31, 2016. 2.1.3 Project costs under concession agreements was of Bt1,675.8 million which comprise of Into-plane substation project of Bt99.2 million, Hydrant equipment of Bt1,066.3
under concession agreements was of Bt1,530.4 million which comprise of Into-plane substation project, Aviation Fuel pipeline equipment, Concession of a subsidiary and Right to use leased land related to
Gross Profit Margin (%) 69.78 69.35 Note: /1 Other costs of goods sold mainly comprise warehouse rentals, utility charges and other expenses related to production. Gross Profit Gross profit for the period
was of Bt9,332.0 million, increasing by Bt2,127.9 million or 29.5% from December 31, 2017 2.1.3 Project costs under concession agreements was of Bt1,627.6 million which comprise of Into-plane substation
, increasing by Bt3,387.7 million or 47.0% from December 31, 2017 2.1.3 Project costs under concession agreements was of Bt1,603.1 million which comprise of Into-plane substation project of Bt90.8 million
) Proportion of cost of sales to sales revenue (%) 32.48 32.37 Gross Profit Margin (%) 67.52 67.63 Note: /1 Other costs of goods sold mainly comprise warehouse rentals, utility charges and other expenses related