End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
選擇權操作篇》BC,BP,SC,SP該怎麼操作?勒式、跨式是什麼? https://nico-invest.com/2019/08/12/optionstrade/