Request for Information (RFI) Assemblers of Plastic Letter Trays- EIRS 74P The U.S. Postal Service (USPS) is conducting Market Research on plastic (HDPE) letter tote assemblers that can provide Assembly Services for EIRS 74P MM Letter trays to be supplied nationally. These totes require specialized equipment to sonic weld the trays. The Postal Service does not intend to award a contract on the basis of this RFI or pay for the information solicited. Interested suppliers please provide your company's name along with the contact information to Marsha McKinley at
[email protected] .