It does but Porsche doesn't advertise the fact that the Ceramic brake technology which is used in modern applications (997, 996 and Carrera GT) is made by a German company "SGL". SGL also provides the ceramic brakes found on the Brabus EV12 and CLS V12 Rocket.

I can't 100% confirm it but i had heard Mercedes-AMG is using Brembo's brakes, can anyone confirm this..?

Slightly off topic, but Porsche also has eight suppliers for their carbon fibre parts.