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About product and suppliers:
        Alibaba.com offers 23,911 courier envelope products. About 62% of these are mailing bags, 8% are paper envelopes, and 7% are packaging bags. 

A wide variety of courier envelope options are available to you, such as poly, kraft bubble, and kraft paper. You can also choose from free samples, paid samples. 

There are 23,878 courier envelope suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and United States, which supply 98%, 1%, and 1% of courier envelope respectively. 

Courier envelope products are most popular in North America, Domestic Market, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 19,125 with ISO9001, 9,446 with ISO14001, and 2,533 with Other certification.