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About product and suppliers:
        Alibaba.com offers 2,449 redundant power products. About 5% of these are switching power supply, 1% are power banks. 

A wide variety of redundant power options are available to you, such as single, multiple, and dual. You can also choose from >500w, 1 - 50w, and 101 - 200w. As well as from 220v, 380v, and 110v. And whether redundant power is paid samples, or free samples. 

There are 2,464 redundant power suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 96%, 2%, and 1% of redundant power respectively. 

Redundant power products are most popular in North America, Mid East, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,165 with ISO9001, 339 with ISO14001, and 320 with Other certification.