I bought a glass butterplatter and was trying to find info on it.
Their online catalogue only shows items available at their shop now. There is no online info (known to me) on retired pieces. I have quite a few old (printed) catalogues, though: if you send me an image (or post it here), I'll have a look.
We usually visit them once a year to see their new designs. First issued last Christmas, but only available in connection with their Children's Christmas Event, now available for all, was their
Lula angel, coming in four sizes, from 18.5 to 70 cm high.
BTW - there is a
YouTube video about their "Erlebniswelt" (= adventure world ?) - concentrating on their museum, fun park, restaurant, ... as a tourist attraction, but also showing a few glimpses on their glass production, including a view from the gallery onto their oven area.