https://blog.wongcw.com/2020/04/12/canalys%e6%95%b8%e6%93%9a%e9%a1%af%e7%a4%ba%e8%98%8b%e6%9e%9cmac%e4%bb%8a%e5%b9%b4q1%e5%87%ba%e8%b2%a8%e9%87%8f%e4%b8%8b%e9%99%8d20%e4%bb%a5%e4%b8%8a/