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About product and suppliers:
        Alibaba.com offers 780,567 power supply products. About 8% of these are switching power supply, 4% are power banks, and 2% are pc power supplies. 

A wide variety of power supply options are available to you, such as >500w, 1 - 50w, and 401 - 500w. You can also choose from single, dc, and dual. As well as from 220v, 110v, and 380v. And whether power supply is free samples, or paid samples. 

There are 778,859 power supply suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 98%, 1%, and 1% of power supply respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 192,652 with ISO9001, 95,825 with Other, and 32,333 with ISO14001 certification.