CoronaLegacyMtl + V-RayMtl materials

Corona version 11
V-Ray version 6

In Corona 7 and above, CoronaMtl is CoronaLegacyMtl
For Corona render, it is recommended to use version no lower than 1.5, as the glossiness of materials is set considering PBR

V-Ray materials were obtained using V-RayMax Converter Pro 4
If you are working in V-Ray version lower than 3.1, be careful, the materials in the BRDF section have Microfaset GTR (GGX), if your version is older than 3.1, the BRDF field will be empty. Choose Blinn, Phong, or Ward – whichever is preferable for you

A weighted normals modifier has been applied and collapsed on some elements.