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://power.farafile.ir/file/34709/هندبوک-پمپ-و-پمپاژ-کاربردی-(practical-pumping-handbook)