Register to use the MECKProcure portal to monitor upcoming opportunities, bid on projects and manage your vendor profile. MeckProcure Guides for Vendors.Visit the city's vendor registration page and submit a vendor registration form. This page displays contracting opportunities from Aviation and some construction contracts from City Procurement. Bids are invited on the basis of a Single Prime Contract. By submitting Your Bid or Proposal, You are offering to enter into a contract with the State. NOW, THEREFORE, if the Principal shall well, truly and faithfully perform its duties, all the.