This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) tradebinding; (2) sample mounting; and (3) postpress services (e.g., book or paper bronzing, die-cutting, edging, embossing, folding, gilding, gluing, indexing). Cross-References. Establishments primarily engaged in printing books or printing and binding books are classified in U.S. Industry 323117, Books Printing.