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About product and suppliers:
        Alibaba.com offers 5,303 valine products. About 17% of these are vitamins, amino acids and coenzymes, 2% are anti-allergic agents, and 1% are immune function agents. 

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

There are 5,288 valine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), United States, and India, which supply 99%, 1%, and 1% of valine respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 503 with ISO9001, 192 with Other, and 76 with HACCP certification.