Black chili tyres are only made in Germany and AFAIK every tyre Continental make in Germany has the black chili compound additive.
A very common mistake (which I’ve seen written by numerous magazines including Singletrack) is to refer to the ‘black chili compound’. There is no such thing! The Kaisier is stickier than the Baron which is stickier than the Rubber Queen which is stickier than the Mountain King which is stickier than the X-King which is stickier than the Race King and so on. Bear in mind that Continental make black chili DH tyres and black chili road bike tyres – clearly it would be ridiculous if they were the same compounds!
The black chili additive allows increased flex in the compound with lower losses, so the compound deforms more easily giving you more grip but doesn’t lose as much energy as heat when doing so, so you get lower rolling resistance. And because the black chili additive is long carbon nano-rods, it helps the compound hold together, stopping you losing the grains of rubber as quickly as if the nano-rods wheren’t there.