Food Additive, Dietary Fiber, Sweentener manufacturer / supplier in China, offering Copper PCA CAS 15454-74-7 Copper Pyrrolidone Carboxylate Cosmetic 99%, Cosmetic Ingredients 99% Copper PCA Powder Copper Pyrollidone Carboxylic Acid, Antixoidant Resveratrol Powder 98% Synthetic Resveratrol Nmn for Capsules and so on.