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About product and suppliers:
        Alibaba.com offers 85 unregulated power supplies products. About 48% of these are inverters & converters, 21% are switching power supply, and 14% are ac/dc adapters. 

A wide variety of unregulated power supplies options are available to you, such as single, dual. You can also choose from 1 - 50w, 401 - 500w, and 201 - 300w. As well as from 110v, 220v. 

There are 81 unregulated power supplies suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Vietnam, and Singapore, which supply 92%, 3%, and 2% of unregulated power supplies respectively. 

Unregulated power supplies products are most popular in North America, South America, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 32 with Other, 15 with ISO9001 certification.