It has lubrication to reduce friction between running belt and running board. Protect the wear resistant coating on the surface of the running board and prolong the service life of the running board. Reduce friction resistance between running belt and running board, and reduce power consumption of treadmill. Reduce resistance and reduce the load of the motor, make the circuit board not easy to damage to prolong the life of the motor. Anti static, lubrication, is not easy to volatile.