Marty Dining Chair:
500 x 480 x H 770 mm
https://dg-home.ru/catalog/stulya/stul_obedennyy_plastikovyy_belyy_marty/ 

Without Turbosmooth modifier:
Polys: 45,466
Verts: 43,355
With Turbosmooth iterations 1 modifier:
Poly: 354,948
Verts: 177,638

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.