I think normally you do the designs yourself or by your company staff  

But in case you can't do that I think that aximmetry provide 3d virtual studio design services you can send an email to  aximmetry sales for more information. 

Thanks for this idea. I will do this.

This post may be of help regarding studio scenes and how to acquire them for Aximmetry:

https://my.aximmetry.com/forum/postdetails/245-a-quick-overview-of-content-creation-in-a