Motor accessories 1.Pass ISO9001 certification 2.10 years mold experience 3.Delivery on time and fast. 1. our company passed ISO9001 certification2. we have the hardness, the depth of testing instruments3. the product dimensional tolerances can be controlled within the range of 20-40microns, the flatness can be controlled in the range of 50-100 microns4. product have no black, crack, strain, ...