A certified copy comes with a raised seal, will have the signature of the concerned authority and will be on a security paper.
一个经过鉴定的副本上盖有钢印，有相关权威的签字并且印刷在防伪纸张上。
Security paper: paper incorporating features, such as watermarks, etc, which make counterfeiting difficult.
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.
保密纸：有着难以仿制的特征，如水印等的纸张。
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