16 PACKAGING MATERIALS OF PAPER, CARDBOARD, NAMELY ENVELOPES AND POUCHES MADE OF CARDBOARD AND CORRUGATED CARDBOARD, BOOK-WRAPPING MADE OF CORRUGATED CARDBOARD, WRAPPING ENVELOPES FOR SHIPPING AND DISPATCH, EQUIPPED WITH SPECIALLY APPLIED SELF-ADHESIVE SEALS; WRAPPING CASES MADE OF CARDBOARD AND CORRUGATED CARDBOARD, FOR SHIPPING AND DISPATCH; WRAPPING BAGS MADE OF PAPER, CARDBOARD OR CORRUGATED CARDBOARD; PLASTIC MATERIALS FOR PACKAGING, NAMELY ENVELOPES, BAGS AND FILMS; PRINTED MATTER, NAMELY CATALOGUES, BROCHURES, FLYERS AND SPECIALIST JOURNALS FOR THE INDUSTRY, NAMELY PACKAGING INDUSTRY; PRINTED INSTRUCTIONAL AND TEACHING MATERIAL FOR THE PACKAGING INDUSTRY; PUBLICITY OBJECTS MADE OF PAPER, CARDBOARD AND CORRUGATED CARDBOARD