Wenzhou Longda Plastic Industry( Business) Co., Ltd., which was established in 1999, specializes in making various kinds of PE fittings, such as couplers, caps, elbows, flange, flange washer, reducers, tapping saddles, water pot, tees and ball valves ( There are two series: electro fusion fittings and butt fusion fittings).The fittings are applied in gas, oil and water systems.