... imported PE,the water in the product can absorb the strong ram,power and buffer the elasticity,thus ... the harm for the cars,passengers and workers in the rail.bright in clour,instruct the road clearly.connecting ... moved,no need to use crane,save labor and cost.flexible apply to any road.protect the ... winding road.it can be used in road,bridge,parking,toll station and the temporary closure of high-speed ...