Is the activation code of GstarCAD series software valid all the time?
The activation code of GstarCAD is matched with your computer. You need not to re-import activation code when you reinstall GstarCAD 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 motherboard or hardware, the previous number is invalid, you have to get a new free activation code from GstarCAD.