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Bangtail Envelopes
Patent No.ZL 02242374.5
Couplet design;
An extension sheet that can be used as a reply letter;
A return letter or advertisement letter can be printed on the extension sheet;
Easy to attract the attention of the receiver;
Increase the number of reply letters, reduce the cost of printing and sealing;
You don't need to buy a separate envelope for your reply;
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