... targets like technology, creative and quality understanding at a higher level. Our production capacity is about 1,500 units to ... Tractor,tractor head truck, tractor truck,towing vehicle,fuel tank,fuel tank truck,fuel truck,oil truck,oil tank truck,liquid truck, ... Petroleum Manholes, Spill Containers,swivels, Couplings and Valves etc. Optic sensor(overfill detection system for tank truck,socket,probe)