AJ Stationery [P] Ltd. Supplies A/4 Size Clear / Display Book. AJ Stationery [P] Ltd. Manufactures paper and paper board stationery. A/4 Size Clear / Display Book are a documentation folder for presenting and preserving certificates, plans, coursework etc. A/4 Size Clear / Display Book are available in capacities as indicated in the tabular column below. These books are available in royal blue, grey, black and red standard colors. These are also available in other sizes.