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About product and suppliers:
        Alibaba.com offers 2,010 20w power bank products. About 6% of these are power banks, 1% are charger. 

A wide variety of 20w power bank options are available to you, such as free samples, paid samples. 

There are 2,012 20w power bank suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 99%, 1%, and 1% of 20w power bank respectively. 

0w power bank products are most popular in North America, Southern Europe, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,036 with ISO9001, 395 with Other, and 113 with ISO14001 certification.