16 Paper; printings, namely, printing paper and printing blocks, printed publications namely, books, magazines, journals, directories, pamphlets, brochures, information reports and newsletters, all of the aforesaid relating to computer software, project management, research and development management, product design, marketing and recruitment; stationery; writing tools, namely, writing utensils; adhesive stationery tape, printed teaching materials, except instruments, in the nature of leaflets, pamphlets, and brochures in the field of computer software, project management, research and development management, product design, marketing and recruitment; architectural building model; writing ink, office sealer, namely, stapler