This Australian company distributes the AC Thor9 (single phase) or 9S (3 x single phase so perfect for 2 phase) in APAC region. There thermal storage tank is also awesome. Reading through there Facebook posts, it looks like sell direct to public by providing a quote first otherwise they will let me know who sells it in NZ as they have shipped to NZ before. Worse case scenario is to import from Europe seeing AUS/NZ approval is already done by below distributor for same model hehe. 

https://esw.net.au/our-products/acthor