The Altman card has a 3d signature. A full set of 3d signature cards, in Kayou flagship store, customers who came to buy cards made popular science on Zhongxin Jingwei. Among the Altman card enthusiasts, those who spend about 1 10,000 yuan in total are ordinary enthusiasts, and those who spend more than110,000 yuan are experts. When they spend millions of yuan, they will be called "card king" in the circle.