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About product and suppliers:
        Alibaba.com offers 295,504 usb power bank products. About 66% of these are power banks, 10% are charger. 

A wide variety of usb power bank options are available to you, such as black, blue, and white. You can also choose from 9001-10000(mah), 3000-4000(mah), and 4001-5000(mah). As well as from free samples, paid samples. 

There are 295,519 usb power bank suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and United States, which supply 99%, 1%, and 1% of usb power bank respectively. 

Usb power bank products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 80,760 with ISO9001, 46,261 with Other, and 16,988 with BSCI certification.