I am very responsible to tell you that the brands you mentioned are currently certified by China Drug Administration, including Ruilan, Joyaden and Arivi, and other unknown brands have come out. Ruilan is the originator of hyaluronic acid. Needless to say, Joyaden keeps hyaluronic acid in hyaluronic acid for a long time. The official certification data is 2 years (how long has it actually been absorbed in one year). There is also the problem of counterfeit goods mentioned upstairs. If you go to a regular plastic surgery hospital, you won't encounter fakes. Look for it. Because in order to get a regular Ryland, Joyaden must have a hospital qualification and a business license code. And then the manufacturer can provide the goods.