Is the registration number of GStarICAD valid all the time?
The registration number of Greatstar is matched with your computer. You need not to re-import registration number when you reinstall GStarICAD if you do not change hardware or reinstall operating system, except the method of registering update version changes. If you just reinstall operating system, the previous number is still valid, re-import it after installation can make you through. If you change mainboard or hardware, the previous number is invalid, you have to get a new free registration number from GStarsoft.com.