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        Alibaba.com offers 21,388 b12 products. About 10% of these are vitamins, amino acids and coenzymes, 1% are antibiotic and antimicrobial agents, and 1% are anti-allergic agents. A wide variety of b12 options are available to you, such as medicine grade, cosmetic grade, and food grade. You can also choose from free samples, paid samples. There are 21,416 b12 suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Malaysia, which supply 96%, 1%, and 1% of b12 respectively. B12 products are most popular in North America, Western Europe, and Mid East. You can ensure product safety by selecting from certified suppliers, including 3,042 with ISO9001, 2,945 with Other, and 852 with GMP certification.
        
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