Serco Gongyi City Water Supply Materials Co., Ltd. is a joint production of rubber mold, plumbing materials, professional companies. The main products are various models of rubber joints, dowel joints, expansion joints, flexible rubber joints, expansion joints, waterproof casing, compensation, loose power transmission connectors, loose telescopic joint, the sleeve-type expansion joints , soft rubber joints, double ball rubber joints, single ball rubber joints, flange rubber joints, reducers rubber joints, double flanged power transmission connectors, power transmission connectors single flange, double flanged removable power transmission connectors, dual flanged expansion joints, single flange expansion joints, Gland telescopic joints, expansion joints of steel casing, thermal pipe expansion joints, flexible waterproof casing, rigid waterproof casing, bellows and related fittings. Strict accordance with national standards of design and production, special specification model according to user needs and demands. Unique design, novel structure is reasonable, reliable performance, bring great convenience and efficiency to the construction, maintenance.