... treament:carburizing and quenching 2.Genuine spare parts 3.Reasonable price 4.Short delivery time 1.ningbo beiduo metallurgical equipment factory is ... --packing3.material:steel,copper,steel copper,bronze,alloy.4.produce equipment:200T,100T,60T,25T,15T,10T,6T,3T.5.high ... used in automobile,motorcycle and many other field.like transmission gear