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://civils.farafile.ir/file/39050/تحقیق-جوشکاری-اصطکاکی-اغتشاشی-جهت-اتصال-اتصال-آلیاژ-aa3003-h18