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About product and suppliers:
        Alibaba.com offers 1,957 waterproof post box products. About 30% of these are mailboxes, 1% are storage boxes & bins, and 1% are packaging boxes. 

A wide variety of waterproof post box options are available to you, such as postal service, apartment, and garden. You can also choose from metal, stainless steel, and aluminum. As well as from free samples, paid samples. 

There are 1,964 waterproof post box suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Japan, which supply 99%, 1%, and 1% of waterproof post box respectively. 

Waterproof post box products are most popular in North America, Western Europe, and Northern Europe. 

You can ensure product safety by selecting from certified suppliers, including 329 with ISO9001, 152 with Other, and 121 with ISO14001 certification.