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About product and suppliers:
        Alibaba.com offers 8,554 mp3 4gb-usb products. About 17% of these are mp3 player, 1% are other toys & hobbies, and 1% are earphone & headphone. 

A wide variety of mp3 4gb-usb options are available to you, such as e-book reading, fm radio, and bluetooth. You can also choose from black, blue / green, and red / pink. As well as from card, portable, and watch. And whether mp3 4gb-usb is 4gb, 8gb, or 16gb. 

There are 8,520 mp3 4gb-usb suppliers, mainly located in Asia. The top supplying countries are China (Mainland), South Korea, and United States, which supply 99%, 1%, and 1% of mp3 4gb-usb respectively. 

Mp3 4gb-usb products are most popular in North America, Western Europe, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 853 with ISO9001, 692 with Other, and 64 with ISO/TS16949 certification.