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nature : leather defects. Leather tablets surface relaxation or fiber material surface layer and link layer mesh edge of being weakened or even a slight separation of the two phenomena. Simple measurement is geared toward the tablets within 90 ° bend, such as tablets face arch-grandniece emerging wrinkles, Fang-ping could not immediately disappear, namely loose. The reason for the quality of raw materials Paper meeting, it was improper processing, such as soaking, liming, the enzyme Sophie, and handled strong, excessive mechanical role of the skin caused excessive fiber digestion and skin caused by excessive fiber loose.
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