In the archive, there is a 3ds Max 2018 Corona scene and an obj file. The renders for the preview were made in Corona Render 13. The model uses Corona Legacy Mtl. Corona version 1.5 or higher is required. The scene contains three trees of Weeping Willow: 2.1m, 268810 poly; 3.2m, 427489 poly; 4.6m, 1062598 poly. The model consists of separate objects that you can use if necessary. Polys: 1758897 Verts: 3462797 The objects and materials in the scene have logical names. "For Corona Render, it is recommended to use a version of 1.5 or higher, as the glossiness of the materials is set with PBR in mind."