Shenzhen Dazhan Tenology Industry Co.,ltd focus on providing the whole set service from designs,Website:http://www.dztenology.com, develops, produces and sells integration .With strong product development, production, marketing capability and mature supply system. We started as a small operation and supplied to individual household , but now have become one of the leading suppliers in the traffic industry in China and participated in the supply of government traffic facilities all over the world .