The file contains two mirrors, round and square with the effect of infinity. To achieve the result presented in the preview, set the Max ray depth parameter to a value from 50 to 100 (Performance tab). The settings are relevant for Corona Render.
Website: https://russian.alibaba.com/p-detail/Round-62482699941.html?spm=a2700.details.0.0.39dc3486O6oBHc 
------------------------------------
Thank you for choosing my model! Happy using!
If you have any questions about this model, write in private messages.