The double wire binding is a double wire ring that will be bent in advance. The ring is worn on the square hole or hole in advance on the scattered page, and the metal ring is pressed by the special equipment to complete the binding. Double ring reservation is the first choice of ring binding, beautiful appearance, strong durable, can accommodate different materials, different shapes of pages, suitable for the thickness of 1 inches of books, widely used in technical manuals, cooking books, product design manuals and other products.
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