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About product and suppliers:
        Alibaba.com offers 686 l-serine products. About 42% of these are vitamins, amino acids and coenzymes, 6% are anti-allergic agents, and 3% are central nervous system agents. 

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

There are 681 l-serine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Canada, which supply 99%, 1%, and 1% of l-serine respectively. 

L-serine products are most popular in North America, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 128 with ISO9001, 58 with Other, and 10 with HACCP certification.