1) Grey chip board paper for gitt boxes ,food pakaging, puzzles 2) ... lever arch files,Ringbinders,Files,Albums,Diaries,Game boards,Displays,Showcards,Puzzle and game boxes,Luxury packagingThe technical spec as ... no blister pick and fuzz on the surface of board,2.It should be slide and clean ,and have ... no warp in the surface of paper board;3.There should no fissure and waviness in the edge ...