Constance Chair:
660 x 860 x H 760 mm
https://vologda.inmyroom.ru/products/2147111-kreslo-constance 


Without Turbosmooth modifier:
Polys: 8,791
Verts: 8,973
With Turbosmooth iterations 2 modifier:
Polys: 281,936
Verts: 141,519

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 PBR into account.