1.Strictly according to IATF 16949 quality certification system process production.                                    2.Teflon or iron ball bowl, make the product wear-resistant, longer life.                           3.The roughness of ball surface is less than 0.6 and so smooth, The hardness was HRC28-36 for Wear-Resisting and Reduced Friction.unify product quality standards to all customers;                                      4.Product development stage all through durability test, pull force test, high and low temperature test, welding strength test,corrosion test and other tests, online production 100% through torsion test, to ensure the best quality.                                5.Products cover Germany, France, Italy, the United States, Japan, South Korea and other car series, exported to Europe, North America, South America and other countries and regions.