The Kiwi company has gained customers from a purpose-built B2B platform accessible behind the Chinese firewall.
NBR reported two weeks ago owner had ruled out lease extension.
Exporting nation requires access to and return from overseas markets.
Founders have extra mental as well as market-based challenges, experts say.
The deal is conditional on government approval.
Farming couple keen to try remote business ownership from the Awatere Valley.
Agree or disagree, love them or hate them, NBR enjoys presenting a range of views for debate.
The selldown had made up to $5m of shares available.
UPDATE: Volpara aims to emulate breast cancer success as lung screening takes off.
Cup holders say more time needed to assess host cities.