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About product and suppliers:
        Alibaba.com offers 11,741 waterproof mail bag products. About 60% of these are mailing bags, 1% are food bags, and 1% are diaper bags. 

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

There are 11,687 waterproof mail bag suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and United States, which supply 98%, 1%, and 1% of waterproof mail bag respectively. 

Waterproof mail bag products are most popular in North America, Domestic Market, and Oceania. 

You can ensure product safety by selecting from certified suppliers, including 9,106 with ISO9001, 4,075 with ISO14001, and 839 with Other certification.