To date there haven't seemed to be any top level professional quality saxophones coming out of China. Unlike saxophones from Taiwan, Chinese instruments have a reputation for hastily put together saxophone shaped objects, a hangover from the older brands such as Parrot and Lark which would bend under your fingers.
These days however, although still very cheap, the build quality has improved to such an extent that if you know what you are looking for there are some good instruments from China. Even well established brands are outsourcing keyword or even entire saxophones. However the fact that there are now some really top quality Chinese flutes (Dhi Zao) suggests that there is no reason why 'the Chinese' cannot make top quality saxophones either. This leads me to believe that it's only a matter of time before saxophones follow suit.