There is usually a sale of office and school supplies during the summer season and our company's general services department staff would always go to the bookstores to avail of the sale. The most common item they buy in bulk are bond paper and yellow pad plus white letter envelopes which have the most demand in our office. My question was the storing of the bond paper which can turn yellowish as time goes by. The staff said that they seal each ream of bond paper using thin plastic so air cannot affect the color and the texture. It didn't occur to me that white paper can be stored for a long time with that style.