Those are not what is normally called "modules"; they are simply individual cells. If your concern is approval for a complete battery package (with protective devices and housing), the CALB cells are no different from any other cell (including an 18650), since they don't include the battery management system, pack-level protective devices, or housing.
Murschel Electric Cars
Unfortunately, Google Translate thinks that this page is already in English, so it won't translate it for me, and I can read very little German. It appears that they do conversions, so they assemble packs, and they might supply a complete pack for your own conversion, but that's a guess. It doesn't seem to have much technical information (or it is buried in text so I'm not finding it), so I can't tell what cell type they are using.
Fleck Electroauto
The energy storage page specifies LiFePO4 cell chemistry, which will have lower energy density than the types of lithium cell now used in production EVs. If they use LiFePO4 for EVs, that would explain your concern.
The Fleck site leads to
ecap Mobility. The ecap site provides almost no information, so they could be using any cell chemistry.