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About product and suppliers:
        Alibaba.com offers 13,691 poly envelope mailer products. About 81% of these are mailing bags, 1% are paper envelopes, and 1% are cooler bags. 

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

There are 13,691 poly envelope mailer suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of poly envelope mailer respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 12,885 with ISO9001, 6,013 with ISO14001, and 3,381 with Other certification.