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as one of the eight amino acids that cannot be naturally produced by human bodies, lysine is, therefore, regarded as an essential amino acid and is widely used in nutritional supplements, stock feed, and amino acid transmission fluid. at vedan, lysine is produced through a direct fermentation process that takes place under a set of specifically pre-determined conditions. utilizing an amino acid producing bacteria with a particular biological nature, this process converts the base material, natural glucose, into lysine. our outstanding lysine products have been certified by iso 9002.