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About product and suppliers:
        Alibaba.com offers 999,015 power supply products. About 12% of these are switching power supply, 5% are adapters, and 2% are inverters & converters. 

A wide variety of power supply options are available to you, such as ac, dc, and single. You can also choose from free samples, paid samples. 

There are 998,531 power supply suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 99%, 1%, and 1% of power supply respectively. 

Power supply products are most popular in North America, Western Europe, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 290,498 with ISO9001, 121,571 with Other, and 38,699 with ISO14001 certification.