Hi, which taxi can I take from PVG to Yiwu and how much would it approximately cost me?

According to your arrival time, it might be hard to find a taxi for such a long distance at night. So you may take shuttle bus line 7 to South Railway Station first. The ticket fare is CNY 20 per person. Then, take a train to Yiwu. The last train departs at 23:30.

Or after arrival, you may stay in the downtown area for the night. On the next morning, you can take a bullet train to Yiwu from Hongqiao Railway Station (about 1.5 hours).