@ the risk if being shot down for providing meat for the carnivores;
Pretty much every country has their own porn in one form or another.
Russian porn "stars" who get lucky move out to the USA and other european areas to appear in "better" quality porn; scope out the massive euro import influx over the last few years in the USA via ZT and 3rd Degree (just to name 2 of them).
China's porn is less typical though; as we all know, different countries have different censorship laws, so each country "exploits" their own "vision" of what they think their so-called target audience trully wants.
But all in all, porn is mainly a USA trademark, even though it started long ago in a galaxy far, far away.
Cheers