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About product and suppliers:
        Alibaba.com offers 5,535 vitamin biotin products. About 41% of these are vitamins, amino acids and coenzymes, 29% are animal pharmaceuticals, and 15% are vitamins. 

A wide variety of vitamin biotin options are available to you, such as cosmetic grade, food grade, and feed grade. You can also choose from free samples, paid samples. 

There are 5,509 vitamin biotin suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and United States, which supply 86%, 5%, and 1% of vitamin biotin respectively. 

Vitamin biotin products are most popular in North America, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,295 with ISO9001, 583 with Other, and 227 with GMP certification.
        
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