To keep our universal mail service at cost-effective and competitive prices, we do business with large and small suppliers that provide performance excellence. In promoting and developing a diverse supplier base, we continue to ensure that no supplier is excluded from opportunities or given preference to compete, on the basis of race, color, religion, sex, age, or national origin.
The Postal Service's supply chain philosophy is built on these four guiding principles:

• We make our requirements known to the marketplace.
• We tell suppliers how we will evaluate proposals.
• We award contracts based on best value.
• We promote economic development in the community we serve by providing access to small, minority-owned, and woman-owned businesses.

By adhering to these principles, we provide a level playing field for all of our suppliers within the chain. In return, we expect and receive the best value for every dollar we spend.

USPS supports internal and external programs designed to provide suppliers with access to our contract opportunities. We are committed to improving all aspects of Postal Service purchasing.