Unic, Smile, Apas, Chinapilots........... There are dozens, new ones popping up all the time. Most have no pilots currently on contract in China. Apas I believe might have one now.
When I applied in China over two years ago there were just as many, but the names were different.
I highly recommend Parc or Wasinc for China. Choosing an agency run by someone who doesn't know the hiring process has a high probability of destroying your chances to work in China, ever, for any carrier.
And Rishworth I wouldn't work for again anywhere on any contract. Notice I said again.