[Code of Federal Regulations] [Title 39, Volume 1] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 39CFR601.105] [Page 178] TITLE 39--POSTAL SERVICE CHAPTER I--UNITED STATES POSTAL SERVICE PART 601_PURCHASING OF PROPERTY AND SERVICES--Table of Contents Sec. 601.105 Business relationships. A person or organization wishing to enjoy a continuing business relationship with the Postal Service in purchasing matters is expected to treat the Postal Service in the same manner as it would other valued customers of similar size and importance. The Postal Service reserves the right to cease accepting or considering proposals from a person or organization when that person or organization fails to meet reasonable business expectations of high quality, prompt service, and overall professionalism.