People who know a little bit about the car should know that most of the metal parts of the car are made of steel china stamping. And stamping die is not cheap, out of a set of mold with the cheapest also tens of millions, not to mention the high precision molds imported, and those molds are very easy.

Moreover, this mold is not finished on the finished finished. Mold post-maintenance, cleaning all affect the precision out of the parts and the yield, maintenance and maintenance are all money ah ...

Poor precision molds, and even bad stamping machine parts will be made by the error, and these errors may be the formation of parts of the auto industry practitioners mouth "tire belt" abnormal sound.

China stamping machine tools and stamping die to save money, car natural cost lower, but this is actually an attitude problem. If you want to build a good car manufacturers, must use the "real material." The seams, it is precisely the manufacturers in the manufacturing cost to save money, the most easy "exposed stuffing" place.

china brake drum: http://www.gasgoo.com/hot/p-brake-drum.html 

china filter element & paper: http://www.gasgoo.com/hot/p-filter-element.html

china brake disc: http://www.gasgoo.com/hot/p-brake-disc.html

china fuel system: http://www.gasgoo.com/hot/p-fuel-system.html