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.
http://shahrsaz5.farafile.ir/file/37626/پاورپوینت-انواع-سدها-از-نظر-کاربرد-و-ساختار