There are 9 models in the scene.
– oven H7860BPX 600 mm in three colors;
– oven H7840BMX 600 mm in three colors;
– hob KM 7210 FR 800 mm;
– refrigerator MIELE KFN29683D black glass;
– island hood MIELE DA 6698 W – black.

https://3dsky.org/3dmodels/show/kollektsiia_bytovoi_tekhniki_miele_01 
https://3dsky.org/3dmodels/show/kollektsiia_bytovoi_tekhniki_miele_09 
https://3dsky.org/3dmodels/show/keramicheskaia_elektricheskaia_varochnaia_poverkhnost_miele_km_7210_fr_800_mm 
https://3dsky.org/3dmodels/show/dvukhkamernyi_kholodilnik_miele_kfn29683d_v_trekh_tsvetakh 
https://3dsky.org/3dmodels/show/nastennaia_vytiazhka_miele_6698_w_898_mm 

Each model consists of several elements everything is assembled into one object and a multi-material is assigned. All materials were renamed and simplified as much as possible I converted the Corona Render materials and did NOT check them in the scene for rendering check the model in a separate scene.

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

Who works in 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.