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://alifile.farafile.ir/file/25728/بسته-کامل-جزوه--فیلم-آموزشی-"-فناوری-نانو-"-(فصل-3-فیزیک-10)