Our company was established in 2005, once called Shenzhen L&D Tech Co., Ltd which product professional security system of Metal detectors , Eas system , also good credible shipping cargo for all our customers . After 5years development, our technology of metal detectors is meeting the international high level and we have got a number of national patent. we are providing quality products such as underground metal detectors, hand-held metal detectors , walkthrough metal detector , EAS system , Precision Air Conditioning and so on .