OR upbeat on prospects for rest of the yearA PTT petrol station operated by OR. Total sales and services decreased by 7.6% year-on-year to 178 billion baht in value for the company. Fuel sales decreased by 7.5% year-on-year to 6.48 trillion litres. A drop in diesel sales was not offset by a significant gain in jet fuel sales, as tourism activities increased, she said. The company said its marketing margin in the fuel business, which refers to revenue made by oil retailers after deducting costs, should be 0.7-1.2 baht per litre.