protective covers for sheets of paper and pages of books; binders [office supplies]; check book covers; corrugated cardboard; file folders; document covers; report covers made of paper; three-ring binders; personal organisers; school supplies [stationery]; ring binder dividers; printed award certificates; dry erase writing boards; file pockets for stationery use; envelopes; account books; ledger books; loose leaf binders; loose leaf paper