保密纸：有着难以仿制的特征，如水印等的纸张。
Security paper: paper incorporating features, such as watermarks, etc, which make counterfeiting difficult.
支票纸：是保密纸的一种，纸身经过化学处理，防止改或欺诈性的使用。
Cheque paper: a type of security paper. The body of which has been chemically treated to prevent alteration or fraudulent usage.
本发明操作简单，省事省力， 适用于保密文件、图纸或废旧纸币等纸件的处理。
The invention has simple operation, is convenient and labor saving, it is suitable to paper processing of classified documents, drawings or waste bank notes and other papers.
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