United National Oil & Gas Company has the largest unit in this field in Yemen and Maintains the largest fleet of transport composed of more than 600 heavy loaders of small, medium and large size. Besides, there are trucks, semi-trucks and tanks which have different level of shipping capacities of about 10 to 80 tans. The huge fleet added a pioneer competitive benefit for the unit as the most reliab fleet in Yemen which specalized to transport the oil products to all power stations in Yemen.