NACE CIP Level 1 training course high voltage holiday detector

NACE CIP Level 1 training course high voltage holiday detector How to use holiday pinhole detector on Coating. It can be used on non conductive coating over conductive substrate [flash=680,400,0]http://player.youku.com/player.php/sid/XODkxNDUzNjE2/v.swf[/flash]