Envelope is our essential daily wrote of goods, but on the history of printing envelopes and a few people know. This article on the history of printing envelopes to be classified, so that we know more about printing envelopes development.

     1, envelopes

     Postage stamps and envelopes is to seal with the letter. Envelopes with stamps of equal value!

     Printing envelopes: referred to as the "Postage closure", it is divided into several types, such as ordinary envelopes, art envelopes, commemorative envelopes, aviation envelopes and so on, it is specific to commemorate envelopes.

     Memorial envelopes printing (JF)

     Such stamps are to commemorate the closure of an important historical event, it is important to organizations such as specialized issue, the upper right corner of the left side of postage pictorial design and research, complement each other, printed in full color, very beautiful. If we say that the equivalent of postage stamps, envelopes, then the Memorial envelopes will be equivalent to the family of commemorative stamps.