Dizzy! You can Baidu yourself or visit their website! I helped you with Baidu. The expert of nose plastic surgery is Liu Jun, who introduced it very well, and there are many case diagrams. It is estimated that it is really a bit level! I saw in his introduction that he had a patent for rhinoplasty called BP rhinoplasty, which seemed to say what autologous cartilage was used as material. I can't remember the details. You'd better go to their website, consult their experts and learn everything.