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://accounting.farafile.ir/file/33471/آموزش-کاربردی-طراحی-سیستم-های-تهویه-مطبوع-با-نرم-افزار-کریر