... 3 emission standard engine.Low rotating speed and high torque, with strong power, good emissions and noise control technology, which ... , higher transmission efficiency, can save fuel 3%.ST series axle with wheel reduction, HC16, AC16 casting axle, stronger loading capacity, ... HW12gears, HW16gears can choose aluminum housing.90kg lighter than the same model with steel housing. HOWO A7 6*4 Dump truck