Hello, classmate, it is necessary to determine whether the third party supervision is needed according to the scale of the project and the bidding documents. It is clear in the tender documents that supervision is not needed, so supervision bidding is not carried out, and there is no supervision unit for the project. Then the owner will play the role of supervision and management, and the commencement order is of course issued by the owner, that is, by the construction unit.

I hope I can help you.