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://file30t.farafile.ir/file/49668/جزوه-دست-نویس-فصل-نهم-علوم-تجربی-پایه-نهم-(فیزیک)-ماشین-ها