University purchasing policies have differing requirements for transacting business with preferred suppliers vs. contract suppliers and suppliers you have established a Master License Agreement (MLA) with the university. Information about preferred and contract suppliers are found in the Supplier Directory. The University Contracts Office (UCO) maintains a list of all suppliers with a master agreement.
The UCO maintains a webpage, grouped by commodity/service, that lists all service providers with a master agreement in place.
Go to University Contracts - Master Agreements webpage