Product Description Rubber dams are mainly suitable for low-head and large-span dam projects, such as gates or movable overflow weirs on reservoir spillways to increase reservoir capacity and power generation head; low-head and large-span rolling dams or overflow weirs on rivers do not require conventional gate hoists, gate machines and working bridges; intake gates, diversion gates and regulating gates are used in channel systems to facilitate water storage and adjust water level and flow; wave breakwaters or tide gates are used on the coast, which are not affected by seawater erosion and marine life, and are better than metal gates; they are used for upstream and downstream gates of orifice ship locks with large spans; they are used to build cofferdams or movable cofferdams. The height of rubber movable cofferdams can be raised or lowered, and overflow is generated from the top of the weir. There is no need to build a weir with soil, which can keep the river clear, save labor and shorten the construction period; they are used in urban garden projects, using colored dam bags, with beautiful shapes and smooth lines, which can add a beautiful landscape to urban construction.