1. Envelopes have different openings

Chinese-style envelopes: open horizontally and vertically on the right side and turn back.

Western-style envelope: a large horizontal triangle with a large flap backward.

Chinese-style envelopes are shown in the picture:

Western-style envelopes are shown in the picture:

2. The sealing edges are different

Chinese-style envelopes: the sealing edges are short, After being opened, the envelope is still a relatively complete paper bag.

Western-style envelopes: The edges of the seal are very wide, and it is relatively easy for the letter paper to fall out after being opened.

Extended information:

Envelope format:

1. Chinese envelope format: Write the recipient’s address on the first line of the envelope, on the upper left side of the envelope Six squares are drawn in the corners and filled in with the postal code of the recipient. Write the recipient's name in the center of the second line of the envelope, and the sender's address and name on the third line of the envelope. The area on the front of the envelope that is 55 mm to 160 mm from the right and less than 20 mm from the bottom edge is the barcode printing area. Do not write or sign here.

2. Western envelope format: The sender's address and name should be written in the upper left corner of the envelope, and the recipient's address and name should be written in the lower right corner of the envelope. When writing in French or English, fill in the name, place name, and country name in line-by-line order. Place names and country names should be written in capital letters and annotated. When writing in Chinese, fill in the country name, place name, and name line by line.