In China, there is a trend that a service much expand to the consumer market will also expand business market area in China, such as instant messenger 'QQ'.
In the recent business seen, it's needed not only 1:1 or 1:n communications, but also N:N one. So, it can be said that 2012 is a year that will start using Social Network for their business scene in China.
It is a one of evidence for such a trend that big consulting company in China "CIC" added to their most recent report "Enterprise Social".
And actually, some enterprise social network products are started to provide from some vendor in China as follows.
1. Crowdroid for Business (Anhui Opensource Software Inc.)
It's a Weibo style enterprise social system that supports accessing from PC or mobile devices, and it supports 3 languages (English, Chinese and Japanese).
2. Kingdee Weibo
Kingdee is a big company that is providing business management softwares, and they also provide Weibo style enterprise social system that supports PC and mobiles.
Famous enterprise social system provider in the world, such as Yammer or Salesforce Chatter, have not entered to the Chinese market, but they probably come to the Chinese market in near future.
On the other hand, some big Weibo and SNS provider, such as Sina, Tencent and Renren, may also start providing their system to business users for getting revenue.
From the words above, I think that it can be said 2012 is a year that will many companies start using the Enterprise Social Network for their business in China.