The key distinction is whether the printing conveys information or advertising content (classifiable as printed matter under HTS Chapter 49) versus whether the printing is incidental to the article's functional use as a paper product (classifiable under HTS Chapter 48). For example, a printed catalog is printed matter, while a printed paper bag is a converted paper product. The classification turns on the primary commercial purpose of the article.

Printed advertising materials may qualify for duty-free treatment under specific HTS provisions, but eligibility depends on the nature of the content, the quantity imported, and whether the materials are being imported for distribution rather than sale. Importers should verify the applicable HTS subheading and any conditional duty-free provisions with a licensed customs broker, as the rules are specific and not universally applicable.