Company was derived from cost of goods sold that adjusted downward mildly from the change in production plan and sales mix. Sales Expenses Sales expenses for the three months period ended 31 March 2018 and

respectively, equivalent to a 24.11% fall from the same period of the previous year. Cost of goods sold to sales revenue ratio mildly adjusted upward from 32.45% to 33.00% as a result of the reduction in

increased mildly 2.9% YoY and 3.0% QoQ. Other costs of service were Bt2,781mn, increasing 5.4% YoY and 1.1% QoQ mainly from higher cost for content offset by lower prepaid commission. SG&A expenses were