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://poshe.farafile.ir/file/38849/ویدئوی-تدریس-شیمی-دوازدهم-تاثیر-دما-بر-تعادلها