Embossing on the surface makes the envelope have a three-dimensional texture;  

100 grams of paper can make 120 grams of feeling;  

With different structural changes, increase the envelope multi-function effect;  

Make the envelope three-dimensional texture, increase the aesthetic degree;  

With different structural changes, increase the envelope multi-function effect;  

Increase the envelope surface friction, easy to transport and packing, improve production efficiency.