SEMS, INC is a manufacturer of World Class Pinhole Detectors and other In-line Quality Control Pinhole Detector systems. We have been mastering the art of pinhole detection for the past 50 years. We specialize in Industrial electronics, precision measuring and inspection equipment for industrial application worldwide. Our SEMS pinhole detectors are used world wide by the foremost food and beverage canning, aerosol can, and decorative metal enclosure manufacturers.