I don't know, I have seen China on other sports too. Even though Chinese is their language, they also have the regular letters too and that's more universal, so maybe instead of segregating themselves they use the latter form. The same goes with Japanese, Korean, and Arabic. I don't think I have ever seen their own writing in a sports athletic apparel.
I did notice that the Chinese jersey were the same style as the American jerseys except for the colors. I think that has more to do with Nike promoting them than our own culture.