Use of Products: These products are mainly used to produce parts for suspensions and safeties of car. It has of uniform-chemicalcomposition, low percentage of harmful elements, high puruty, slight decarburisation, good surface quality. They also has characteristics of spheroidize anneal easily in course of heat treatment, low percentage of cracks in coldheading, tight tolerance,uniform hardness.The progeny of “the development of cold-formed steel for car” had been identified by Hebei province in 2008. The experts agrees the following:The product quality that produced with middle-small converter has achieved international advanced level. Now the products have been used in international famous cars largely.