Time Of Establishment：1970-01-01
Our products uses raw materials made by shanghai No.5 steel factory, Taiwan Walsin Lihwa Corp. The valve sealing rings are from Dow Corning and Duallay in U. S. All the valves are processed by imported equipments such as CNC. Every Yuanan's valve is strictly tested before dispatched from the factory to ensure that its product quality is of international standard.
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