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Shanxi Solid Industrial Co.,Ltd. is located in the heavy industry province of Shanxi, China with rich resources of pig irons,coke,steel and other industrial raw materials,we are one of the leading manufacturers of Ductile iron pipe,Ductile Iron Pipe Fittings , Flange Adaptors , Couplings , Dismantling Joints ,Valves , Manhole Covers , Steel Flanges ,Carbon steel pipe fittings,malleable iron ...