China, High Performance, Double, Eccentric, Butterfly Valve Wafer, Lugged, Flanged, Manufacture, Factory, Price, Carbon Steel, Stainless Steel, A216 WCB, WC6, WC9, A352 LCB, A351 CF8, CF8M, CF3, CF3M, A995 4A , A995 5A, A995 6A. 150 milliard klassdan 2500 milliardgacha bosim.