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D&R Hot Selling DN15 Nylon Ball Valve Female Threaded Connection Bsp/NPT Standard Industrial Plumbing Valves, Find Details and Price about Nylon Ball Valve Mini Ball Valve from D&R Hot Selling DN15 Nylon Ball Valve Female Threaded Connection Bsp/NPT Standard Industrial Plumbing Valves - Ningbo D & R Metal Industries Co., Ltd.