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://ahmz.farafile.ir/file/34293/جزوه-سازه-بنایی-مقاوم-در-برابر-زلزله-و-نمونه-سوال-حل-شده