One is the membership card making thickensthe level、 process, to sophisticated technology development. High grade books at historically high levels, various cover materials advances, special membership card after processing technology. In the case of the whole book bookbiding emerges Deluxe or heterotype or sewing binding or binding hardcover and air back processing without blocking fabrics in soft cover (medium size), and so on; the format of the fold before the port, there are more and more of the former port with no homogeneous form, bleeding design multi-fold and require blood faitudo, etc.

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