Celsius 18M stove:
915 x 1085 x H 1645 mm
https://www.ozon.ru/product/drovyanaya-pech-dlya-bani-tselsiy-18m-so-steklom-do-18m3-100gradusov-2390139167/?at=A6tGP83GncM7kQMDSN5v26wIx4VY0DSNz4xXKHRJwpRM 

Without Turbosmooth modifier:
Polys: 286 230
Verts: 278 602
With Turbosmooth modifier iterations 2:
Polys: 1 499 478
Verts: 870 469

A Displacement map is used; for a clearer image – Render setup-Performance-Displacement-Screen size – the smaller the number, the clearer the image;
The Turbosmooth modifier with Isoline Display is applied to the necessary 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 use a version no lower than 1.5, as the glossiness of materials is set with PBR in mind.