My husband and I are arriving in Shanghai from Germany on Aug 4th

And will leave at 2pm 0n the 8thAug.
He travels under a Nz passport and I under an on a USA. It is my understanding that we can get a 144 hour transit visa for our length of stay .
Can we obtain the visa stamp before we leave nz or do we have to do it at the airport upon arrival.
Becky
If we can do it ahead of time where can I find the visa form for this type of visa