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About product and suppliers:
        Alibaba.com offers 454 pro duo products. About 8% of these are memory card, 3% are usb flash drives, and 1% are processors. 

A wide variety of pro duo options are available to you, such as mmc card, ms pro duo card, and sd card. You can also choose from 1gb, 16gb, and 2gb. As well as from free samples. 

There are 454 pro duo suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of pro duo respectively. 

Pro duo products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 50 with ISO9001, 32 with Other, and 12 with BSCI certification.