... years experience Steel forging auto parts1,Name: Steel forging auto parts;Steel auto parts;Forging auto parts 2,For the similar auto parts,what can ... do ?1), Ability for the material of this kind of auto parts: Grade3.6,4.6,4.8,5.6,6 ... finish (3),Ability for the tolerance Roundess0.002mmCylindricity0.003mmRoughnessRa0.32Straightness0.01/200mm 3,How about the packing details?Plastic bags inside ...