This specific 3D model, "Factory layout 3D Model Pack purchase", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
The license for this digital asset is "Unknown license".
BLEND (Blender, filesize: 16.5 MB), OBJ (OBJ, filesize: 630 MB), FBX (Autodesk FBX, filesize: 47.6 MB), MAX (Autodesk 3ds Max, filesize: 688 MB), GLTF (glTF, filesize: 17.6 MB), SKP (Sketchup, filesize: 231 MB), DAE (Collada, filesize: 1.51 GB), 3DS (3D Studio, filesize: 27.2 MB), DXF (DXF, filesize: 87.5 MB), STL (Stereolithography, filesize: 23.2 MB)