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About product and suppliers:
        Alibaba.com offers 120,093 switching power supply products. About 50% of these are switching power supply, 16% are ac/dc adapters, and 1% are other pcb & pcba. 

A wide variety of switching power supply options are available to you, such as single, dual, and triple. You can also choose from 1 - 50w, 101 - 200w, and 51 - 100w. As well as from 220v, 380v, and 110v. And whether switching power supply is free samples, or paid samples. 

There are 119,002 switching power supply suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 98%, 1%, and 1% of switching power supply respectively. 

Switching 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 26,044 with ISO9001, 13,860 with Other, and 3,294 with ISO14001 certification.