When rendering, the Turbosmooth modifier with a value of 1. There is no smoothing modifier in the scene. All objects in the scene are grouped. Measurement units mm.
In the archive files:
- coronarender_3DMax_2015
- FBX_Coronarender

Other decorative sets:
https://3dsky.org/3dmodels/show/bathroom_decor_set_22 
https://3dsky.org/3dmodels/show/laundry_set_6 
https://3dsky.org/3dmodels/show/bathroom_decor_set_001 
https://3dsky.org/3dmodels/show/laundry_set_01_3