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://farafiles.ir/file/48939/تحقیق-آلودگی-محیط-زیستی-پالایشگاه-نفت-و-روش-کنترل-آن