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About product and suppliers:
        Alibaba.com offers 13,274 poly envelope mailer products. About 79% of these are mailing bags, 18% are packaging 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 13,274 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 12,306 with ISO9001, 6,031 with ISO14001, and 3,563 with Other certification.