Copperleaf Technologies is a software developer for Windows.
It is reported that the following Windows processes are part of V4U:
If you want to remove V4U from your computer, just go to Start > Control Panel > Add/Remove programs and select V4U from the list of programs.
It is reported that the following Windows processes are part of Sigma Ceramics:
If you want to remove Sigma Ceramics from your computer, just go to Start > Control Panel > Add/Remove programs and select Sigma Ceramics from the list of programs.