increased 63.10 percent due to higher gain from exchange rate. 1.2 Cost of goods sold and expenses Consolidated (Thousands Baht) Year Change 4th Quarter Change 2018 2017 Amount % 2018 2017 Amount % Cost of
revenues was mainly from short-term investment which the Company has invested since January 2017. Cost of Sales and Gross Profit Unit : THB mm Unless otherwise stated For the three-month period ended 30
volume vs last year same period. The impact on the financial performance was significantly mitigated (operational cost saving program launched still in Q1 after Covid-19) and longer term via a network
incomes increased 0.22 million baht. Total increased 1.26 million baht. Cost of sales for the three months ended March 31, 2017 amounted to 31.76 million baht. (2016: amounting to 29.19 million baht) The
incomes decreased 0.47 million baht. Total decreased 5.78 million baht. Cost of sales for the three months ended March 31, 2019 amounted to 30.00 million baht. (2018: amounting to 28.26 million baht) The
significant rise of natural gas prices while the Ft rate did not increase correspondingly to reflect the higher cost, which impacted the gross profit of Rayong Central Utility Plants and IRPC-CP. Also, the
significant rise of natural gas prices while the Ft rate did not increase correspondingly to reflect the higher cost, which impacted the gross profit of Rayong Central Utility Plants and IRPC-CP. Also, the
(Thailand) Company Limited at October 1, 2020 in accordance with the Public Limited Act B.E. 2535 (1992), as amended. This Amalgamation is considered as business combination under common control, and to
192.48 210.45 (17.97) (8.54%) 3 - Testing and Inspection 16.83 14.42 2.41 16.71% 4 Cost of sales and services (362.98) (423.61) (60.63) (14.31%) Gross Profit 44.38 47.63 (3.25) (6.82%) Other income 3.28
Cost of service 300.99 78.03% 331.19 77.17% 271.60 76.36% 59.59 21.94 Expenses of sales 9.81 2.54% 12.69 2.96% 14.42 4.05% (1.73) (12.01) Expenses of management 49.30 12.78% 48.24 11.24% 32.56 9.15