Shanghai Jingning Shock Absorber Co., LTD., located in the southwest of Shanghai city, the millennium old city Songjiang, is the professional manufacturer which specializes in water supply, drainage equipment and piping fittings. Our production as follows: rubber joint, flexible connectors, duckbill valve, curved rubber joint, expansion joint, the rubber duckbill valve etc pipeline equipments. Our company has many years of production history, with abundant strength, and carries out strict quality standard.