Corrugated Pipes, Waterstops, Expansion Joints manufacturer / supplier in China, offering Custom-Molded Rubber Waterstop with Flange Connections for Pipe Penetration Sealing, Chemical-Resistant Butyl Rubber Waterstop with Anchoring Fins for Wastewater Treatment Plants, Customizable Modular Expansion Joint with Adjustable Gap Width for Various Bridge Types and so on.