For years, the main cause of 2556 (2013) in increased service costs. Due to the fixed costs and includes: Salaries and employee benefits increased operating about 30 percent compared with the year before. Due to expanding manpower and to comply with the overall economic conditions. A portion of the cost of depreciation machinery and equipment. Vehicles to transport approximately 204 per cent increase compared to the year before. Due to the expanded service capacity to contain the buys, tools, equipment, vehicles, to accommodate the growth, including the repair of various systems improvements related to the work place, the cost of providing the service revenue increased by approximately 6 per cent compared with the year before. For years, 2557 (2014) service costs are in the ratio 72.70 per cent when compared with the revenue from services, which is the ratio of close to a year ago, with its constant costs include.
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