Shijiazhuang Haitian Fine Chemicals CO.,Ltd which is a leading manufacturer of amino acids for food grade and pharmaceutical grade in China.And we have three production lines:The first line produces:Glycine,L-LysineHCL,L-Threonine,L-Tryptophan,DL-Methionine,DL-Alanine;The second line produces:L-Methionine;The third line produces:L-Hydroxyproline and L-Proline...