In reply to Mandarin Type Faces:
Your current choice looks a goot fit. However, I want to mind you it is "yet another bold Hei(=sans-serif) font" and may or may not be too common.
As far as I remember, there are not many bold sans Simplified Chinese fonts shipped with OSes anyway. Check Microsoft Yahei-Bold(from Windows) and Hiragino Sans GB W6(from MacOSX) to see if your choice is too "common".
And, here are some more foundries to look at:
http://www.foundertype.com/
http://www.arphic.com/
Finally, for 汉鼎 fonts, I (as a native Chinese) googled a few times but failed to find the official website... So be ware.