The paper industry is an industrial sector that manufactures various types of paper and paperboard. The product range includes: pulp, machine-made paper and paperboard, processed paper, handmade paper, etc. Papermaking is one of the four major inventions of ancient China. The improvement by Cai Lun in the Eastern Han Dynasty laid the technical foundation. Papermaking began to spread eastward to Korea and Japan in the early 7th century (during the late Eastern Han and early Tang Dynasties), then westward to Samarkand in the 8th century, followed by Baghdad, Damascus, Cairo in the 10th century, ...
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