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About product and suppliers:
        Alibaba.com offers 1,192,143 power supply products. About 22% of these are switching power supply, 5% are inverters & converters, and 1% are pc power supplies. 

A wide variety of power supply options are available to you, such as 1 - 50w, 500 - 1000w, and 51 - 100w. You can also choose from single, dc, and dual. As well as from free samples, paid samples. 

There are 1,192,143 power supply suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% 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 341,939 with ISO9001, 125,726 with Other, and 48,695 with OHSAS18001 certification.