U-Hebei Honray Imp. & Ex. Efumaneka eShijiazhaung, e-Hebei, e-Chiina Ngaba ngumthengisi we-Amino Acids oqeqeshiweyo. Sijonge kwii-Amino Acids ngaphezulu kweminyaka engama-20. L-Lysine, L-Threonine, L-Tryptophan, L-Methionine, DL-Methionine, L-Valine, L- Leucine, L-Isoleucine, L-Phenylalanine kunye neGlycine (ii) mveliso zethu ezomeleleyo.