1.type:the camshaft flat form grinding wheel 2.working speed:35(m/s) 3.roundness:international standard ... have four subcompanies in Fengxi Jiangxi.1.Jiangxi Province Dinghai grinding wheel Co., LTD-----(DHSL)2.Jiangxi Province Dinghai Tantalum&niobium Co ... protection energy Co.,LTD Grind the crankshaft and the camshaft grinding wheel widely used in automobiles, trucks, diesel engine, the plane and ...