In the scene is a model of a black electric ceramic hob BOSCH PKF375FP1E panel width 310 mm wide depth 527 mm. The model consists of several elements everything is assembled into one object and multimaterial is assigned. All materials were renamed and simplified as much as possible I converted the materials of Corona Render and did not check in the scene for rendering.

The FBX file contains all models with materials. There are no materials in the OBJ file only geometry.

Who works in the V-Ray version lower than 3.1 be careful in the materials in the BRDF section there is 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.