... forming,cold resistant,hot resistant,anti-impact,not easy to bend2.With water in it ,the buffer elasticity ... stronger .Light (1)Easily moved,no need to use crane,save labor and cost.(2)Flexible apply ... enduce power much stronger .(4) Easy to store, it can stack up to save storage space .Flexible:(1)It can ... be adjusted to the winding road.Light can be installed on it ...