Hi there, welcome to the forum. I am guessing that you are referring to the pine option for the hives which is only available in Australia? I don’t work for Flow, so I can’t be sure, but most hive suppliers do not treat their wood with anything before sending it out.
If you are really worried about termites, you need to consider treating the wood yourself with something like copper naphthenate, or better yet, buy the western red cedar version, which is naturally termite resistant and doesn’t really require any treatment at all. I live in California, and we have voracious termites here, so I understand what you are dealing with.