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://slidesaaz.farafile.ir/file/45676/آزمایش-تعیین-ارزش-ابی-کالریمتر-در-قالب-پی-دی-اف-شامل-3-صفحه