Profile: Gramg Gold Int'l Security Organization Holding Group Ltd. is a supplier of walk-through metal detector, metal detectors, and X-ray metal detector. We also offer hand held metal detector, X-ray inspection machine, underground metal detector, hand held explosive detector, and factory metal detector. VS-UVSS-1S under vehicle surveillance system is an integrative information management system which can automatically conduct image acquisition, display, contrast, and alert for undercarriage information. The system is highly effective in preventing vehicle undercarriages from hiding bombs, weapons, and biologically & chemically dangerous goods, and control access to some important sites. It also can prevent vehicle undercarriages from carrying drugs, smuggling, or even to avoid illegal immigrants from passing checkpoints.