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.
知乎:我22年被录入高分子材料与工程专业,在网上看到很多劝退的,现在有些犹豫,高分子专业真的好吗? https://www.andrewsun.net/panta_rhei/archives/8578