It depends on the signature of the person. It is normal that the personnel on the project are different from the bidders, as is the case in many units. If it is the project manager and laboratory director, it should be signed by the bidder. Unless the project manager and laboratory director go through the change procedures and get the written consent of the owner, this may happen in actual construction. If it is still in the bidding stage, it should be the name of the authorized agent.