Pure natural VC has antioxidant effect, and the oxidation reaction in human body is an important cause of aging and fatigue, while vitamin C has the function of scavenging oxygen free radicals in the body and protecting tissues from oxygen free radicals, and only pure natural VC is effective, but synthetic vitamin C is ineffective. So now more people choose pure natural VC. 2 1 jinweita, yangshengtang, vitamins, jinerkang, shancun, golden partner and weicun are all better brands. If the landlord buys it, you can still make reference first. If you need to know more about good brands, I suggest you go to the brand network MAIGOO to check the top ten brand rankings, learn more and choose more.