... 4.Oem offered 5.Powder metal high precision gear Nantong Guanda Powder Metallurgy Co., Ltd. is ... --sintering--resizing--cleaning--vacuum oiling--packing3.material:steel,copper,steel copper,bronze,alloy.4.produce equipment:200T, ... automobile,motorcycle and many other field.like transmission gear,spur gear,bevel gear,helical gear,powder metallurgy gear,sleeve,copper sleeve,sleeve bearing, bushing ...