I looked at the link again. The boxe look nothing like the Paradise Honey polys.
'Sound-alike' name, I reckon. I am always very careful where sound-alike names are involved.
RAB
As far as I am aware Paradise Honey sell two types of Langstroth Poly hives, their own design of lipped boxes with plastic inserts and a Langstroth poly hive with flat contact edges.
The flat edged boxes should be compatible with Swienty and American Beemax poly boxes as well as wood Langstroth boxes. The lipped edge box may be compatible with nothing other than Paradise Honeys lipped edge box.
Neither here nor there if you intend purchasing just a few hives, but in my humble opinion buying in to the lipped edge box designe would be a poor investment choice if purchasing a large number hives.