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About product and suppliers:
        Alibaba.com offers 242,246 dc power supply products. About 34% of these are switching power supply, 1% are voltage regulators/stabilizers, and 1% are temperature instruments. 

A wide variety of dc power supply options are available to you, such as single, dc, and dual. You can also choose from 51 - 100w, 1 - 50w, and >500w. As well as from 220v, 380v, and 110v. And whether dc power supply is free samples, or paid samples. 

There are 241,013 dc power supply suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 98%, 1%, and 1% of dc power supply respectively. 

Dc 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 57,364 with ISO9001, 19,486 with Other, and 7,614 with ISO14001 certification.