Attached link (for work visa Z) may help.
http://hk.wrs.yahoo.com/_ylt=A3xsaNQccnBKe1cA643wzAt.;_ylu=X3oDMTBya2NsM2FiBHNlYwNzcgRwb3MDMQR*****2xvA2hrMgR2dGlkAw--/SIG=129cf85ue/EXP=1248969628/**http%3a//www.china-embassy.org/eng/hzqz/zgqz/t84245.htm
http://hk.wrs.yahoo.com/_ylt=A3xsaNQccnBKe1cA643wzAt.;_ylu=X3oDMTBya2NsM2FiBHNlYwNzcgRwb3MDMQR*****2xvA2hrMgR2dGlkAw--/SIG=129cf85ue/EXP=1248969628/**http%3a//www.china-embassy.org/eng/hzqz/zgqz/t84245.htm