Resin Garden Chair
Made according to the dimensions and photos from the manufacturer's website:
https://www.bizchair.com/products/commercial-all-weather-resin-patio-stack-chair-with-contoured-backrest-dhf-340-app 

Model dimensions and number of polygons/vertexes:
Length: 48.7 cm (19.2 in)
Width: 52.2 cm (20.6 in)
height: 77.4 cm (30.5 in)

23824 polygons
24004 vertex

The scene contains 3 copies of the model, and the model has its own configured material assigned to it.

All objects have normal names.
All materials have convenient names.
All textures have a unique name.

The model in the scene has a Turbosmooth modifier assigned to it in Render Iterations=1 mode, which is applied only during rendering.
In the obj file, the model is saved with Turbosmooth=1 applied. The model is saved separately without Turbosmooth applied.

Pivot Point is aligned to the center of the model.

Those who work 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. Select Blinn, Phong or Ward - what is preferable for you.

For Corona render, it is recommended to install version not lower than 1.5, since the glossiness of materials is configured taking into account PBR.