They provides freesms to countries including China.
With Packet8 MobileTalk, people can make international calls directly through cell phone via Packet8’s IP network. The rate is not bad for some countries, like 1 cent for China. It’s a good way to make calls. And no wifi/data plan required. But people do need install their application on their phones. Here is a list of Supported Mobile Phones.
I wonder what the quality is. If anybody has tried it, you’re welcome to comment.