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About product and suppliers:
        Alibaba.com offers 8 r4 flash card products. About 12% of these are playing cards. 

A wide variety of r4 flash card options are available to you, such as paid samples. 

There are 8 r4 flash card suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of r4 flash card respectively. 

R4 flash card products are most popular in Mid East, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 2 with ISO9001 certification.