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through the implementation of special protection on the extremities cornerstones of magazines, books, files and the like, to prevent
through the implementation of special protection on the extremities cornerstones of magazines, books, files and the like, to prevent
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机译：通过对杂志，书籍，档案等四肢的基石实施特殊保护，以防止
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摘要
the patented system in question finds application in the field of consumer goods. often you find the edges of books or similar, folded or ruined.with the application of the special protection to avoid this problem.
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