Corona version 9
The model uses materials that may not be displayed correctly in very old versions of the engine.

Malcom carpet by Visionnaire
https://catalogue.visionnaire-home.com/ru/products/malcom-carpet 

The object is a single one, textures and materials have logical names
Texturing UnwrapUVW
Corona 9 Physical Material Version
Corona 9 Legacy Material Version (this material will open in versions corona 6 and below)
VrayMTL Version
FBX Corona/Vray

For Corona render, it is recommended to install a version not lower than 1.5, since the glossiness of materials is configured with PBR in mind.

Who works in a V-Ray version lower than 3.1 be careful, in the materials in the BRDF section there is a Microfaset GTR ( GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward – which is preferable for you