Nanpu Development Zone belongs to caofeidian area, Tangshan City. Nanpu Development Zone is located in the center of Beijing, Tianjin and Bohai Sea, and it is the intersection of the capital economic circle and the Bohai Sea economic belt. Nanpu Development Zone is a salt chemical industry base among the five chemical industry bases in Hebei Province, and it is also the leading area of the chemical industry chain among the seven industrial chains in Tangshan City.