... &density 3.High precision 4.Oem offered 5.Good planet gear Nantong Runfeng Powder Metallurgy Co., Ltd. is specializing in powder ... used in automobile,motorcycle and many other field.liketransmission gear,spur gear,bevel gear,helical gear,sleeve,copper sleeve,sleeve bearing, bushing,bush,pulley ... ,powder metallurgy parts,nut,auto parts,rotor and stator,planet gear etc.