There are 100s of species of Eucalyptus. Find out which one Ohana is using and someone might be able to help.
Another example of an East Asian ukulele maker trying to get away with confusing details about the wood. Some Eucalyptus trees are in old growth forests which are allowed to be harvested by shady political arrangements. Some is grown in sustainable plantations. By not naming the exact species, Ohana is avoiding the environmental issues. UU does not allow political statements so I will not go any further. Also by not naming the species, Ohana is setting up to be able to change the species without informing the market.
Personally I would avoid all contact with this ukulele until we see full disclosure.