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About product and suppliers:
        Alibaba.com offers 41,411 bank ion products. About 55% of these are power banks, 17% are rechargeable batteries, and 1% are solar energy systems. 

A wide variety of bank ion options are available to you, such as li-ion, li-polymer. You can also choose from free samples, paid samples. 

There are 41,380 bank ion suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 99%, 1%, and 1% of bank ion respectively. 

Bank ion products are most popular in North America, Western Europe, and Northern Europe. 

You can ensure product safety by selecting from certified suppliers, including 12,514 with ISO9001, 8,450 with Other, and 1,673 with BSCI certification.