... resistant,anti-impact,not easy to bend2.With water in it ,the buffer elasticity will be better,without the ... 1)It is made of imported PE,The water in the product can absorb the strong ram power ... the harm for the cars,passengers and works in the rail .(2) Bright in color,instruct the road clearly .(3) ... installed on it . (2)It can be used in road,bridge,parking,toll station and temporary closure of high ...