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://shetab.farafile.ir/file/25563/پاورپوینت-کنترل-ایمنی-و-امنیت-ماشین-آلات-و-مصالح-و-کارگاه