Cost of services excluding IC in FY19 amounted to THB 44,550 million, decreasing 1.4% YoY mainly driven by lower regulatory and amortization expenses of assets under concession, which were partly offset by higher amortization expenses of 1800 MHz and 900 MHz spectrum licenses, lease expenses of assets under concession to CAT, and costs related to partnership with TOT on 2300 MHz wireless business.【อ่านข้อความเต็ม】