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://paper.farafile.ir/file/21221/تحقیق-طراحی-و-ساخت-ربات-آتش-نشان-به-وسیله-سنسور-دود-دما-مانع-و--