冷挤成型

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/7fc57b68-c4e6-41d0-97bb-3e1df3889951/2020-11-21_21-43-25.gif

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/f7ac2461-c585-42c8-9c57-1d5933476111/2020-11-21_21-41-53.gif