Version Corona - 1.5
The model uses materials that may not be displayed correctly in very old versions of the engine.
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V-Ray version 3.2
Who works in a V-Ray version lower than 3.1 be careful, in the materials in the BRDF section there is a 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

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