Latony, niuniu07,
Here is what I posted on trackitt for my case:
China
Labor Filed: 09/18/2004
Service Center: Nebraska
Category: EB2
USCIS Receipt Date: 03/14/2007
Fingerprinting #1 Date: 02/12/2007
I-485: approved: 09/10/2007
Receipt Date to 485 Approval: 180 days
EAD Approval: yes 05/02/2007
Advance Parole Approval: yes 05/17/2007