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Stiffening ring inside diameter of outer diameter of 1274 914 highly 404 weight 2.60 img style = "width:400px; height:300px;" ALT = "Zhangqiu letter a jade ring forgings factory" SRC = "http://yxdj.qipeiren.com/UploadFile/UserProPic/2012/7/ 6/20127622591274574.jpg" / > Zhangqiu City letter a jade ring forgings factory is engaged in the ring forgings production for more than ten years, specializing in the production of axle, flywheel ring gear blank, gear blanks, < o:p> gear ring blank forging ring forgings, sophisticated technology and reliable quality.