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About product and suppliers:
        Alibaba.com offers 2,898 vitamin b2 products. About 43% of these are vitamins, amino acids and coenzymes, 5% are food additives, and 3% are immune function agents. 

A wide variety of vitamin b2 options are available to you, such as free samples, paid samples. 

There are 2,943 vitamin b2 suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Japan, and Malaysia, which supply 92%, 1%, and 1% of vitamin b2 respectively. 

Vitamin b2 products are most popular in North America, South America, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 653 with ISO9001, 416 with GMP, and 277 with ISO22000 certification.