... , qualified machining Description:1.Name: Q345D precision machining protective set automobile part 2.Material : Q345D3.Process: CNC machining, ... Ra0.26.Application: Auto part, machinery part, locomotive part, marine part, truck part ItemDescriptionProduct ClassMachiningMaterialCopper, Carbon steel 25#, 40#, ... & long cooperated relationship. Q345D precision machining protective set automobile part