DIFFERENTIAL ASSEMBLY EXPERT Our Logo: Differential ,Differential Gear ,Differential Assembly,Differential Assy ,Gear ,Shaft1.Material:20CrMnTi.2.HRC:Surface :58-63;Inner:33-48.3.Finishing:black oxide/phosphate/original color.4.Packing: Neutral export carton box.(Or as required)Qisheng Automobile Equipment Co,Ltd.Quanzhou is a professonal manufacturer. Who make gear parts and assembly. The goods ...