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

A set of Type dining tables from Ellipse furniture

– oval dining table type 1600*950 mm and 1400*850 mm
https://ellipsefurniture.ru/catalog/gostinnaya/po-kollektsiyam/type/51278/ 

– rectangular dining table 1600*900 mm and 1400*900 mm
https://ellipsefurniture.ru/catalog/gostinnaya/po-kollektsiyam/type/51262/ 

5 different finishes

Objects are partially attached textures and materials have logical names
Texturing UnwrapUVW
Vray materials are obtained by conversion

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