A set of garden outdoor furniture from a chair, a square table and a rectangular table and an umbrella.

Chair dimensions:
height 78 cm
width 56 cm
depth 51 cm

Rectangular table dimensions:
height 75 cm
length 120 cm
depth 76 cm

Square table dimensions
height 75 cm
width 82 cm
depth 85 cm

Umbrella dimensions:
height 192 cm
width 197 cm
depth 197 cm

The max file contains one chair model, a square table and a long table, an umbrella.
For beauty, the pictures show compositions of tables with two chairs and an umbrella.

The chair and table models in the scene have the Turbosmooth modifier set to Render Iterations=2, which is only applied during rendering.
In the obj file, the model is saved without Turbosmooth.

All objects have normal names.
All materials have convenient names.

Model weight without Turbosmooth:
261,581 polygons
262,697 vertices

Those who work in V-Ray versions 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 - whatever suits you best.

For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is configured with PBR in mind.