Vendors are required to complete disclosures before entering into a City contract. These disclosures are required for all contracts.There are different types of vendors doing business with the Commonwealth. If you are interested in doing business with the Parking Authority, please complete the vendor registration form linked below. Vendor Registration Form. Use this form if you have a question about Vendor Outreach and Opportunities or about the services we offer at Children's Hospital of Philadelphia. Insert the wording "General Construction Package Vendor Registration" in the subject line. Completing questionnaires; Providing references; Submitting audited financial data; Demonstrating ability to meet PGW's needs. DO be specific when filling out purchase requisitions.