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In addition to the basic detection and alarm functions, the current metal detectors provide special functions specially developed by various manufacturers, such as:
Qualir Auto Electronics Co., LTD, founded in 1998, aims to Make car owners' drive with less effort and cosily by providing auto electronics of Quality and Reliability. In May 1998, Qualir developed and produce Car CD, VCD Players and home CD,DVD Players. In March 2003, Qualir began to develop and provide Car Mp3 players,Car DVD Players,and properly developed Car DVD Players with Built-in GPS function in 2004. In June 2007, Qualir decided to develop a platform for direct wholesale of Auto electronics. In September 2007, Qualir's wholesale Dept was successfully founded and our online wholesale store was finally completed.
Tasty & Fun:
The concrete (usually with steel bar) is poured directly into the stable and solid roadbed, and the new line of ordinary sleeper and gravel bed is not used. This kind of line is clean, suitable for large volume and difficult maintenance area, especially for tunnel, underground railway, port wharf and stone road base. But its construction investment is big, if because of the construction slapdash or basement instability, concrete layer fracture, cure difficulty. China's overall Taoist route in the tunnel is more than 300 kilometers long
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