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.
https://rdarsifile.pdf-doc.ir/product/16370/دانلود-پاورپوینت-عوامل-شیمیایی-زیان-آور-محیط-کار