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About product and suppliers:
        Alibaba.com offers 1,727 waterproof post box products. About 32% of these are mailboxes, 1% are packaging boxes. 

A wide variety of waterproof post box options are available to you, such as stainless steel, metal, and plastic. You can also choose from postal service, apartment, and garden. As well as from gift & craft, mailing. And whether waterproof post box is free samples, or paid samples. 

There are 1,730 waterproof post box suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Japan, and Taiwan, 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 382 with ISO9001, 178 with ISO14001, and 85 with Other certification.