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 Signature Pen refers to a pen specially used for signature or signature, with water-based sign pen and oily signature pen. I used to use a pen, but now the pen is gradually replaced by gel pen. Therefore, such pens are all called: signature pens. Water-based sign pen is generally used on paper. If it is used on whiteboard or sample, it is easy to be wiped off; Oily signature pen is generally used for sample signature or other permanent marks. Oily signature pen is difficult to wipe, but it can be cleaned with alcohol and other substances.

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