Prefabricated house with precast concrete walls + Styrofoam - who knows something like this?

Hello everyone,
we are considering buying a used bungalow as a prefabricated house from 1978. According to the building description, the wall structure is different from anything I have read so far about prefabricated houses: From the outside: 1cm clinker facing / 13cm lightweight concrete LBn 150 (Berwilit or similar) / 5cm styrofoam / 5cm lightweight concrete (Leca or similar). The K-value: 0.5.
Actually, that sounds quite solid to me and avoids the usual problems that are often heard about with old prefabricated houses with timber frame construction. But I have never heard of this wall structure with concrete parts and cannot find any experience reports either.
Does anyone here in the area have such a house and can share their experiences with the construction method? I am interested in all information, durability, problems, renovation or subsequent insulation, are there still providers who build like this today, etc.
Thank you very much
Frank

We have a prefabricated house built in 2019 made of 10cm/17.5cm concrete + 20cm [WDVS]. However, it becomes difficult to make changes to the house; simply installing a few outlets is practically not possible. Include this in your renovation planning if you decide to go for it.

Berwilit

This is supposed to be bloated shale,

Leca

and this is "light expanded Clay Aggregates" (expanded clay). Do you know which provider built these houses?