premium ingredient co.,ltd produces and distributes amino acids, vitamins, nutraceutical and food addtives for over 10 years, served for more than 100 users. The main products include l-lysine, methionine, l-cysteine hcl, glycine, l-arginine,l/d-aspartic acid, dl/l-alanine, acetylcysteine, acetyltyrosine, thiamine, sodium hyaluronate, HMB-Ca, chondroitin sulfate, potassium sorbate etc.