Mainfeatures Highprecisionofthepre-bendingofedges Whenedgesbepre bended,forthechangeofthehorizontalmovementofthetoproll,usercansetthelengthofthestraightedge;Toprollpressdirectly,then,usercanmaketheshapeofthestraightedgeundercontrolandthepre-bendingofedgescanbehighprecision. Highprecisionofproducts Toprollbedesignedinadrumshape,andsupportrollscanbeadjusted;Inanextensiveambitofthethicknessfromthintothick,Westillcangetsidealproductswithhighprecisioncycle,straightandavoidtrumpet. NCcontrol,highproductefficiency NCcontrolstheup-downandhorizontalmovementsoftoproll,theefficiencyofproductsgetsagreatextentadvance.Oneneedsforwork,easyoperation.