Questions? Email us: sales@haneng.com   Download The 30 Day Demo Download our fully functional demo and develop your solutions today, then when you want to purchase HanengCharts all you have to do is to replace the demo license key with a purchased key! No need to change or rewrite your code! It is that simple!! Click to Download the 30 Day Demo Size about 100K. Unzip the download file (using e.g. WinZip) and open the ReadMe.html file in your browser to start using HanengCharts! To unlock the full, never expiring version of HanengCharts 3.1 (and to remove the HanengCharts 3.1 Demo message at the right bottom corner) just replace the demo license key with a purchased license key. Read this guide for details.