Paper is a thin material produced by pressing together moist fibres of cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets. It is a versatile material with many uses, including writing, printing, packaging, cleaning, and a number of industrial and construction processes.
The pulp papermaking process is said to have been developed in China during the early 2nd century AD, possibly as early as the year 105 A.D.,[1] by the Han court eunuch Cai Lun, althoug อ่านต่อ
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