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About product and suppliers:
        Alibaba.com offers 2,435 oem portable power source products. About 1% of these are ac/dc adapters, 1% are switching power supply, and 1% are inverters & converters. 

A wide variety of oem portable power source options are available to you, such as single, dc, and dual. You can also choose from >500w, 301 - 400w, and 1 - 50w. As well as from dc/ac inverters, jump start, and standby. And whether oem portable power source is 380v, 220v, or 110v. 

There are 2,440 oem portable power source suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 99%, 1%, and 1% of oem portable power source respectively. 

Oem portable power source products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 880 with Other, 597 with ISO9001, and 120 with ISO14001 certification.