The commonly used envelope specifications in domestic standards are (length x width on the front):
Envelope No. 3 (B6): 176 × 125mm
Envelope 5 (DL): 220 × 110mm
Envelope No. 6 (ZL): 230 × 120mm
Envelope No.7 (C5): 229 × 162mm
Envelope No. 9 (C4): 324 × 229mm
Envelopes are widely used in business and daily life, not just for storing letters. Paper bags such as red envelope bags, CD bags, button bags, card bags, glasses bags, etc. are all in the form of envelopes, and many envelopes exported abroad are non-standard. To learn more about envelope customization, please visit the official website of Hengzhi or call us: http://www.dghengzhi.com/products-161418-0-0.html

