premium ingredient co.,ltd produces and distributes amino acids, vitamins, nutraceutical and food addtives, for instance l-lysine, methionine, L-threonine, l-tryptophan, GABA, l-cysteine hcl, glycine, l-arginine, acetylcysteine, acetyltyrosine, glycine, l-citrulline, l-leucine, l-isoleucine, l-valine, l-glutamine, BCAA, sodium hyaluronate, HMB-Ca, chondroitin sulfate, potassium sorbate, thiamine, vitamin b2, sodium ascorbate, malic acid, tartaric acid, stevia extract, MSG etc.