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://keshavarzi.farafile.ir/file/30003/پاورپوینت-جداسازی-میعانات-گازی-به-کمک-فرآیندهای-غشایی