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About product and suppliers:
        Alibaba.com offers 379 portable msr products. About 44% of these are pos systems, 6% are card reader. 

A wide variety of portable msr options are available to you, such as cf card, mmc card. You can also choose from internal, external. As well as from paid samples, free samples. 

There are 390 portable msr suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and United States, which supply 97%, 1%, and 1% of portable msr respectively. 

Portable msr products are most popular in Western Europe, North America, and South America. 

You can ensure product safety by selecting from certified suppliers, including 72 with ISO9001, 54 with Other, and 9 with ISO14001 certification.