Upon arriving at the Fair Complex, I was amazed because it was so huge. I got the number of the van so when it would be departure time back to the hotel I could find it easily.
I proceeded to the Registration booth. You need 2 pieces of 2 x 2 ID and a copy of your passport plus 150 RMB as registration fee. Registration had a very long queue. It took almost 30 minutes.
After registration I went straight to the electronics section. There were about a thousand of display booths for electronics alone. If you would want to see all the booths I think it will take you 3-4 days. You have to come back every day. The building has 5 floors and divided into classifications of displays.