Rules of origin updated to add a compression refrigerator freezer origin criterion and permit third country invoicing with certificate details. The amendment prescribes an origin criterion for specified compression-type combined refrigerator freezers requiring a change at the six digit HS level and a minimum local value added content, and it permits customs to accept certificates of origin when sales invoices are issued by third country entities provided the product meets the rules of origin; exporters must indicate third country invoicing and the issuer's name, address and country on the certificate.