The full name of AJ is AIR JORDAN. It is a sub-brand established by former American NBA basketball superstar Michael Jordan after signing with NIKE. It is currently under NIKE and is also called Jordan in Chinese translation.

There is also a Qiaodan (Jordan) brand in China, which is not the same as the American one. Moreover, it was sued by AJ for trademark infringement last year and lost the case. The logo in the picture below overlaps perfectly with the photo of Michael Jordan. . .