About Product:Direct manufacturers of aluminum alloy car Li, folding bike, 6th floor stair climbing cart 40E-6. This is only a aluminum alloy climbing up the stairs, and close up the wheels automatically stack in the back, stomping on before the end of dray automatic ticket, open the car to car floor facing use gently with the feet step on the floor and, such as fixed step must pay attention, stop and look at the wheel is not stuck, getting stuck at the wheel, gently forced him out.