Need expert opinion

We are located in Shimla, Himachal Pradesh .. Our client is also in Shimla, HImachal Pradesh .. We received an order from our client for some packaging item .. now that item is manufacturing at Mumbai .. and now our client is saying to bill items to him (at Shimla) but deliver the items to his associate at Hyderabad .. we don't want to show the details of manufacturer at mumbai to our client in Shimla or his associate in Hyderabad .. i hope i am able to make the inquiry clear .. pls advise us to how to make invoice or e-way bill ... thanks in advance