1.heavy duty,loading efficiency is high 2.cummins engine ,great power, 3.widespread working environment,walking stable Specification of crawler trailor: engine100Cummins) Loading weight10TMax flux50ml/rHydraulic system working pressure 30MPaDimension of the carhopper4000*2000*500mmmain pumpCHUANG QI (from south korea)Walking speed7km/h