I arrive at T2 Shanghai Pudong Airport at about 4 pm and I hope to take the airport shuttle bus to yiwu city.

You can take the bus at 17:10 from Pudong airport to Yiwu. You can find the bus at the Long-distance Bus Station of Pudong Airport in the south end on the second floor of the airport terminal's bus parking lot. The ticket is available at the ticket office of Pudong Airport Long-distance Bus Station: Gate 6-7, 8-9, Arrival Hall, Terminal 1 (T1); exit of bus parking area, P1 (in the airport long-distance bus station).