It's one of the richest food cultures in the world. If you've never tried sichuan peppercorn on mapo tofu, or pickled mustard greens on noodle dishes, I think you're in for a real treat.
In terms of fresh meat and vegetables, it's pretty much all grown/produced in Australia. Anything canned / dried is often imported though. Things like rice or coffee beans you technically can buy Australian grown but you'd have to go out of your way to find it.
These do involve foods from China though..