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About product and suppliers:
        Alibaba.com offers 237,540 portable power bank products. About 75% of these are power banks, 1% are money boxes. 

A wide variety of portable power bank options are available to you, such as black, beige, and blue. You can also choose from 3000-4000(mah), 9001-10000(mah), and 15001-20000(mah). As well as from free samples, paid samples. 

There are 237,407 portable power bank suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and South Korea, which supply 99%, 1%, and 1% of portable power bank respectively. 

Portable 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 62,022 with Other, 44,893 with ISO9001, and 7,976 with BSCI certification.