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About product and suppliers:
        Alibaba.com offers 2,378 waterproof transformer box products. About 3% of these are switching power supply. 

A wide variety of waterproof transformer box options are available to you, such as single, dual. You can also choose from 101 - 200w, 1 - 50w, and 201 - 300w. As well as from 220v, 110v. And whether waterproof transformer box is free samples, or paid samples. 

There are 2,381 waterproof transformer box suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and India, which supply 99%, 1%, and 1% of waterproof transformer box respectively. 

Waterproof transformer box products are most popular in North America, South America, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 628 with Other, 420 with ISO9001, and 14 with ISO14001 certification.