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About product and suppliers:
        Alibaba.com offers 975 vitamin b1 b2 products. About 20% of these are vitamins, amino acids and coenzymes, 16% are immune & anti-fatigue, and 1% are anti-allergic agents. 

A wide variety of vitamin b1 b2 options are available to you, such as medicine grade, food grade. 

There are 964 vitamin b1 b2 suppliers, mainly located in Asia. The top supplying countries are India, China, and Malaysia, which supply 1%, 87%, and 2% of vitamin b1 b2 respectively. 

Vitamin b1 b2 products are most popular in United States, Australia, and United Kingdom.