Japanese stationery and writing instrument manufacturer Pentel has invented a kind of pencil lead by combining together the skills and knowledge of aromatherapists with nanotechnologists. Utilizing nanocapsules, the lead is able to maintain a pleasant aroma for up to 2 years if kept in a package and 3 months if left in open air. Previous forms of scented lead only received surface treatment and lost their Scent very quickly. This new product, "Ain supplio", recently won the Stationery of the Year Award (2007).