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

A set of Vitruvi products:

– Vitruvi electronic essential oil diffuser: https://vitruvi.com/products/stone-essential-oil-diffuser  #!variantWhite
– Vitruvi essential oils: https://vitruvi.com/collections/essential-oils 
– metal shelves SINGLE from Frema: https://framacph.com/products/single-shelf-stainless-steel-d20-w80 

Objects are partially attached textures and materials have logical names
Texturing UnwrapUVW

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 there is a Microfaset GTR ( GGX) in the materials in the BRDF section 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