Hi Peteski,
The RAILNSCALE Collectibles are ready made hand painted models. The parts are printed on a Anycubic Photon resin printer and painted in Poland by DM-Toys. These models are very detailed with a smooth appearance and the good thing is that this material is not brittle.
So the short answer: no, it is not like the frosty fuzzy resin, and you can literally drop the vehicles without breaking them. Of course throwing around with nice miniatures like thes is not really what I would recommend you of course.
Regards,
Maurice