1In August 1992, Yanjiao Economic Development Zone was established with the approval of Hebei Provincial People's Government.
With the approval of the State Council, Yanjiao High-tech Zone was upgraded to a national high-tech industrial development zone. It is the frontier for Hebei Province to accelerate the coordinated development of Beijing-Tianjin-Hebei and serve the construction of Beijing Sub-center, and can accept the effective radiation of Beijing's science and technology, talents and resources.