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://mazrae-asia.farafile.ir/file/43004/تحقیق-انواع-روش-های-تصمیم-گیری-چند-متغیره