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.
https://123dok.co/document/z3dl20jm-강원도립대학교-소방환경방재과-학습자료실-재택수업에-소방경보시스템공학-소방환경방재과-학과자료실-학습자료실.html