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It seems like you're referring to "USPS CF," which could stand for several things depending on the context:
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USPS CF: Could be a shorthand for "USPS Commercial Flat Rate," which is a shipping rate offered by the United States Postal Service (USPS) for packages that fit within certain size and weight limits.
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USPS CF: Could also stand for "USPS Certified Financial Institution," which is a financial institution that is certified by the USPS to provide certain financial services.
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USPS CF: It could be a typo or a specific term within a specific field or context that is not immediately clear without additional context.
Could you please provide more details or clarify the context in which "USPS CF" is being used? This will help me give you a more accurate and detailed response.