Lanno Dining Chair:
600 x 570 x H 815 mm
https://dg-home.ru/catalog/stulya/stul_obedennyy_bez_podlokotnikov_svetlo_korichnevyy_lanno/ 

Without Turbosmooth modifier:
Polys: 29,064
Verts: 29,088
With Turbosmooth iterations 1 modifier:
Polys: 232,392
Verts: 116,306

The Turbosmooth modifier with Isoline Display was applied to the required objects;
There is an FBX file (if necessary, apply the Turn To Poly modifier to the FBX file);
For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of materials is configured taking into account PBR.