... Chinese advanced patents and technology. Less resistance Stable running Name: screw idler Product Depict: It is the part used to support ... Shandong Province,Ma An Shan Lron&Steel Plant,Chang Shu Power PlantEtc.),And have exported to the japan,America,Europe ... my dear friends from all over the world. Chinese screw idler,rubber idler rollers, Conveyor rubber screw roller idler,industrial conveyor roller