I think we have to wait for someone volunteer, who has bought the factories, inform us at the WIKI-community or by adding pages.
Since they were a bit expensive (costing real money) and the products are not often (or at all) asked for at Commercial Port, I am not sure if anyone bought it.
There is a pineapple achievement that will require the Fruit Plantation, just as there is an achievement for gold bars that requires the metal mine & processing plant to complete.
More information available at 2016 September - Summery Snack Set.