In July 2012, the Tangxian Economic Development Zone was officially incorporated into the provincial-level development zone management system by the Hebei Provincial Government. The total planned area is 16.3 square kilometers. It is divided into two zones: the South Zone and the North Zone. The South Zone is located 3 kilometers south of the county seat, with its main area in Changgu Town, 11 kilometers from the Tangxian Toll Station on the Beijing-Kunming Expressway. With a planned area of 10 square kilometers, its leading industries include machinery manufacturing, food processing, and light industrial products;The North Zone is situated 20 kilometers northwest of the county seat, with its main area in Baihe Town, adjacent to the Xiemah Toll Station on the Baofu Expressway. It has a planned area of 6.3 square kilometers, with new building materials and mineral extraction and processing as its leading industries.