Q: Who actually makes these brake pads?

The pads use Performance Friction compounds, and Performance Friction is a supplier to Porsche Motorsport, so this is genuine race-derived friction rather than a generic street pad. The compounds are semi-metallic and hold grip through roughly 500 to 800 degrees Fahrenheit, the range where stock pads start to go soft. That heat tolerance is what lets you brake late repeatedly instead of feeling the pedal fade after a few hard stops.