Wuhan Grand Hoyo Co.,Ltd dedicates to produce amino acid and its derivates, include N-Acetyl-L-Cysteine, Carbocisteine, L-Cysteine Hydrochloride Monohydrate(Animal /Non-animal), N-Acetyl-L-Tyrosine, L-Citrulline, L-Citrulline DL-Malate, L-Ornithine L-Aspartate, L-Cysteine Hydrochloride Anhydrous(Animal /Non-animal), L-Cysteine(Animal /Non-animal), L-Ornithine HCl，L-Serine etc.