Materials of frame:        #304 stainless steelmotor    :                 2*70watts 24vLithium batteries :        24v/10AhWheels:                    Magnesium alloyTyres:                     nature rubberClimbing capacity:         12 degreesMax.speed:                 7.5 km/hourMax.carrying capacity:     40kgMax. travelling range:     20kmCharge time:               6-10hoursCarton size:               72*66*25cmN.W/G.W:                   13kg/16kg Quantity for 20‘/40’:    240pcs/480pcs