Gongyi Hengzhong Supplying of Water Materials Company Products reach nearly one hundred series, thousands of specifications, including five series of patent products. They are flexible rubber joints, reduced rubber joints, rubber elbows, fan coil joint, sewage check valve rubber, rubber filter, rubber compensator air flue compensator, flexible hanger, rubber shock pad, shock absorber, pipe damper, seal, gate valve, check valve, foot valve, filters, valves, pressure balance valve