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About product and suppliers:
        Alibaba.com offers 2,897 envelope air mail products. About 64% of these are mailing bags, 3% are packaging boxes, and 1% are air freight. 

A wide variety of envelope air mail options are available to you, such as free samples, paid samples. 

There are 2,897 envelope air mail suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of envelope air mail respectively. 

Envelope air mail products are most popular in North America, Domestic Market, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 2,377 with ISO9001, 1,975 with ISO14001, and 1,055 with Other certification.