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About product and suppliers:
        Alibaba.com offers 1,735 otg mobile card reader products. About 53% of these are card reader, 5% are pos systems, and 2% are access control card reader. 

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

There are 1,737 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 189 with ISO9001, 101 with Other, and 73 with ISO14001 certification.