¡ñThe strong sweeping system cleans completely. ¡ñVacuum dust extraction system is built in. ¡ñThe large-sized powdery dust filtering screen can completely clean dust. ¡ñSteel chassis is prepared for loading. ¡ñThe tyre is durable for long term. ¡ñIt has braking device. ¡ñAll mechanical parts are easy to be taken apart. ¡ñThe time for continuous working is 4h. ¡ñThe driving speed is about 0-4km/h.
