Who works in V-Ray version lower than 3.1, be careful, in the materials in the BRDF section is Microfaset GTR (GGX), if your version is older, than 3.1, the BRDF field will be empty. Choose Blinn, Phong or Ward - which is preferable to you.
For Corona render, it is recommended to put a version not lower than 1.5, since the glossiness of materials is adjusted to PBR.
The model is placed in zero coordinates. Units are millimeter. All file paths are deleted.