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Highway Roller Barrier is designed to prevent vehicles from colliding with obstacles, or to prevent wrong vehicles from entering the opposite traffic flow, which can reduce the occurrence of head-on collisions.

Bridge Piers Against Collision is a protective device installed on or around the pier to protect the bridge. Its main purpose is to avoid damage to the pier when a collision occurs, thereby preventing the structural damage of the bridge and protecting the safety of the bridge.

Pipe Blocking Airbag is a multi-specification and multi-shaped rubber product made of polymer synthetic materials such as rubber and fiber fabric through high-temperature vulcanization process for pipelines, culverts, sewage, desilting and maintenance. It is mainly used for drainage and sewage pipelines， emergency repair, and closed water test leak detection. It can quickly block water flow in different pipe diameters, planes and positions, and is an ideal tool for underground pipelines for drainage and sludge treatment.