https://www.douyin.com/user/MS4wLjABAAAAX5cpKDvAteO7k6rZdsy-CMl0t-LaXb2jo797bCQBLXfo6BeOS9AjaeUg5JkZjYJM?from_tab_name=main&vid=7266636673809796386 专利好像检索不到 想大致了解下工艺 解下, 好像, 专利
