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About product and suppliers:
        Alibaba.com offers 5,079 paper envelopes mailer products. About 62% of these are mailing bags, 7% are packaging bags, and 2% are packaging boxes. 

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

There are 5,093 paper envelopes mailer suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Poland, and Hong Kong, which supply 99%, 1%, and 1% of paper envelopes mailer respectively. 

Paper envelopes mailer products are most popular in North America, Domestic Market, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 3,973 with ISO9001, 2,794 with ISO14001, and 1,479 with Other certification.