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://stufile.farafile.ir/file/27745/پاورپوینت-رزین-های-مبادله-کننده-یون-و-زئولیت-ها-در-تصفیه-آب