L-Proline, L-Serine, L-Tyrosine manufacturer / supplier in China, offering Amino Acid CAS 70-26-8 99% Pure L (+) -Ornithine, Factory Supplies Pure L-Glutamic Aicd CAS 56-86-0 Amino Acids Raw Material, Ascorbic Acid Vitamin C Powder for Food Bp2019/USP42/FCC11/Ep9.3/E300 CAS 50-81-7 and so on.