Speaking of automobile braking system, one of its key components is the brake disc. At present, our common braking devices mainly include "drum brake" and "disc brake", among which disc brake is sometimes called disc brake, which is divided into two types: ordinary disc brake and ventilated disc brake. In addition, sports cars like some luxury brands will be equipped with or equipped with more advanced "ceramic brake discs", which of course also belongs to the category of "disc brakes".