1life time :8year 2about 200m long 3direct manufacturer 4get relevant certificate 5 spcial designed by guohui engineer Pulleys by climbing device, high traction to the track after self-producing and kinetic energy of mutual conversion, along the track tilt down, high-speed by go up and abject inertial, especially like a crazy mice running, taxiing, is a kind of tourists particularly fond of ...