If it's a Hong Kong customer, obviously doing international business, they're most likely banking with HSBC and have good online banking with instant bank transfer.
Small credit unions, and I don’t recall seeing any on NZ banking sites when I grew up - they essentially have domestic WTs because you can send money to anyone’s bank account online (in NZ having someone’s bank account number means you can send them money, not the US absurdity of withdrawing money)