Paper and papermaking

The Application of Chemical and Physical Tests in Estimating the Potential Permanence of Paper and Papermaking Materials... 

C.E. Paper and papermaking (Cai Lun) Although papyrus paper already existed, Gai Lun creates paper from a mixture of fibrous materials softened into a wet pulp that is spread flat and dried. The material is strong and can be cheaply mass-produced. 

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