... 3.high precision 4.good strength 5.alloy steel spur gear Nantong Runfeng Powder Metallurgy Co., Ltd. ... oiling--packing3.material:steel,copper,steel copper,bronze,alloy.4.produce equipment:200T,100T,60T,25T, ... motorcycle and many other field.like transmission gear,spur gear,bevel gear,helical gear,sleeve,copper sleeve,sleeve bearing, bushing ... ,rotor and stator,sintered parts,alloy steel spur gear etc.