Hi Wayne,
Sorry but I think you may have to contact the suppliers directly to ask if their phones are compatible with NZ standards.
I tried doing a search for more than an hour but I just couldn't find one that stated out right that their phones are compatible with NZ standards.
But here are dropshippers that might have what you are looking for -
Link hidden: Login to view
Link hidden: Login to view
Link hidden: Login to view
Link hidden: Login to view
Link hidden: Login to view
Link hidden: Login to view
Link hidden: Login to view
All the best :)