CCE Models kits come with a 3D printed shell that is made from a custom-blend resin which is like plastic but slightly more brittle. If repairs are needed, superglue, UV activated cement, or epoxy works well. Resin sands easily (if needed) but note that resin dust can be irritating so wet-sanding and/or a small vacuum will help keep things tidy.
Most of the kits are designed to produce an accurate model in T Scale (1:450) scale.