Where can we as a repair shop get hardware keys from google?

[AC Question]

We repair our own employes phones, mostly lenovo/motorola. Often they are FRP locked and we have no way of unlocking them, they just sit here in a box and more arrive by the day. Now since the company i work for is quite big and we are a IT-Sup/Repair unit im thinking we should be able to get a hold of these tools but we cant get in touch with anyone with answers motorola sent us to google, google sent us to motorola.

Maby some one here knows how?