... As fully hydraulic turning system equips with equidistant hinged car rack,frontal and rear wheel have the same track, elimainating hermit power ... and more flexibke operation, has more stable perfomance.4,As rear car rack is applied to single-plate T-shaped girder, so ... rod, high digging force and high shovel efficiency.Luxurious car is sound insulated,heat insulated,broad visual field,seat chair ...