Regarding Amino Acids, we can provide many kinds of Amino Acids as following. We have license of GMP, ISO, HALAL, KOSHER, KDMF and COS, exported to North America, Europe, Japan, Korea and so on. L-Cysteine and its derivatives L-Cysteine Hydrochloride Monohydrate L-Cysteine Hydrochloride Anhydrous L-Cysteine S-Carboxymethyl-L-CysteineCarbocisteine) N-Acetyl-L-Cysteine L-Thioproline L-Amino acids L-Citrulline L-Ornithine Monohydrochloride L-Methionine L-Leucine L-Tyrosine L-Valine L-Isoleucine L-Glutamine L-Tryptophan L-Lysine Hydrochloride L-Serine L-Cystine L-Arginine Hydrochloride L-Arginine L-Histidine Monohydrochloride L-Histidine Acetyl amino acids N-Acetyl-L-Cysteine N-Acetyl-L-Tyrosine N-Acetyl-DL-Leucine N-Acetyl-L-Methionine N-Acetyl-L-Glutamine N-Acetyl-L-Leucine N-Acetyl-DL-Methionine N-Acetyl-L-Tryptophan N-Acetyl-L-Phenylalanine N-Acetyl-L-Citrulline N-Acetyl-L-Thioproline N-Acetyl-L-Hydroxy proline N-Acetyl-L-Alanine N-Acetyl-L-Glutamic acid N-Acetyl-L-Histidine N-Acetyl-L-Isoleucine N-Acetyl-L-Proline N-Acetyl-L-Valine DL/D-Amino acids DL-Cysteine Hydrochloride Monohydrate DL-Cysteine base DL-Leucine D-Cysteine Hydrochloride Monohydrate Compound salts of amino acids L-Arginine L-Aspartate L-Ornithine L-Aspartate L-Arginine L-Glutamate L-Arginine L-Pyroglutamate L-Lysine S-Carboxymethyl-L-Cysteine Amino acids esters L-Cysteine Ethyl ester Monohydrochloride L-Tyrosine Ethyl ester Monohydrochloride L-Ornithine Ethyl ester dihydrochloride L-Leucine Ethyl ester Monohydrochloride L-Lysine Ethyl ester dihydrochloride Etc.