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/29243/استفاده-از-اسیدهای-آمینه-بعنوان-ممانعت-کننده-خوردگی-برای-فلزات