Is the telephone survey generally before or after PVA? Is it necessary to investigate the general 570 logo?

Usually after! And before! ! The probability of 570 is really high, about 80%! !

How long does it usually take to sign the approval letter after PVA passes? The 570 visa may be slower?

Yes, it usually takes 2-4 weeks, and 570 may take 1 month! !

By the way, collect the recent progress and experience of 570!

Small experience, full preparation, to tell the truth, or justify it! !

Friends in Sichuan suggest looking at the following websites.