What is GB and CB?

lingling

can anyone to tell me about that
+ b! W" b" o, H! i. E+ l8 j: Dwhat is GB and CB?
9 ~0 J  \& a6 }) B* }: p# e! j$ N- \/ u6 u9 R& Y( n& j4 C
because i saw a post talk about that
4 ~# }! @6 o, E( K1 ]+ \tvb now,tvbnow,bttvbhttp://www.tvbnow.com/thread-72978-1-1.html