Envelopes , letter cards , plain postcards and correspondence cards , of paper or paperboard ; boxes , pouches , wallets and writing compend - iums , of paper or paperboard , containing an assortment of paper stationery .

纸或纸板制的信封、封缄信片、素色明信片及通信卡片；纸或纸板制的盒子、袋子及夹子，内装各种纸制文具。