JD.COM can buy many good AP calipers by himself, and they are all professional, so don't worry about piracy or quality problems.
In terms of product strength, Ap brakes have always had extremely strict quality control. Before it is officially sold, it must go through numerous actual road tests and pass TUV certification in Germany before it can be sold, so there is no need to worry too much about quality. Secondly, Ap brake has many patents that can improve the braking effect. However, the piston inside the caliper is not always large. By matching the brake discs with different diameters, the size of the internal piston of the caliper can be changed, and the real braking balance can be pursued. As for the brake price of ap5200, the whole set is around 2500. In fact, this price is acceptable. After all, you bought brand-name brakes. Moreover, compared with the same price, the braking performance of ap5200 can be said to be outstanding. Even if you change your favorite car to more than 300 cars, it's no problem to brake with ap5200.