Hebei Honray Ndondocha. & Kutulutsa. Co., Ltd. Ili mu mzinda wa Shijiazhaung, Hebei, Chiina Ndi katswiri wothandizira amino acid. Takhala tikuganizira Amino Acids kwazaka zopitilira 20. L-Lysine, L-Threonine, L-Tryptophan, L-Methionine, DL-Methionine, L-Valine, L- Leucine, L-Isoleucine, L-Phenylalanine ndi Glycine ndi zinthu zathu zamphamvu (zofunika).