Shenzhen Da'ao times laser technology limited company our company was founded in 2008, is a manufacture of laser correlation detector with well-equipped testing facilities and strong technical force .our company covers an area of 1500 square meters .with a good quality ,reasonable price and stylish designs ,our products are extensively used in perimeter security ,bridge height limit, anti-intrusion and some games. such as the runway barrier security ,subway, railway, nuclear power station, gas station, oil field, warehouse, museum, bank, armory, broad bounder barrier security, the game of...