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://dostan.farafile.ir/file/34011/پاورپوینت-تصفیه-پساب-کشتارگاه-مرغ-به-روش-انعقاد-و-لخته-سازی