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About product and suppliers:
        Alibaba.com offers 1,788 otg mobile card reader products. About 53% of these are card reader, 3% are usb flash drives, and 2% are access control card reader. 

A wide variety of otg mobile card reader options are available to you, such as cf card, sd card, and memory stick card. You can also choose from all in 1 / multi in 1, single. As well as from external, internal. And whether otg mobile card reader is usb, expresscard slot, or ieee 1394. 

There are 1,796 otg mobile card reader suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 98%, 1%, and 1% of otg mobile card reader respectively. 

Otg mobile card reader products are most popular in North America, Western Europe, and Southern Europe. 

You can ensure product safety by selecting from certified suppliers, including 194 with ISO9001, 105 with Other, and 74 with ISO14001 certification.