All the Hanse epoxy boats have an "e" in their number. I think the link you supplied was to one of their polyester boats.
They used to offer most models with the e option and it appears from a quick look at their web site that they now only offer their largest yacht with this feature.
This is a link to specifications of one of their e boats. The details of the hull
construction are not extensive (why do yacht manufactures burry such vital, and fundamental information on how the yacht is constructed?), but they do say
Epoxy resin infused closed cell sandwich core