http://support1.lenovo.com.cn/lenovo/wsi/index.html

http://www8.hp.com/cn/zh/support.html

http://www.fujitsu.com/cn/support/

http://pc.toshiba.com.cn/service/download.jsp

http://cn.gateway.com/support/downloads.html

http://cn.msi.com/index.php?func=downloadindex

http://support1.lenovo.com.cn/lenovo/wsi/index.html

http://supportapj.dell.com/support/downloads/index.aspx?c=cn