3503 19。 According to official website information, the State Post Office of Gaoshan Town, Fuqing City, Fujian Province is rich in products and has a vast territory, and its postal code is 3503 19. Fuqing (formerly Fuqing County in Fuzhou) is a county-level city under the jurisdiction of Fuzhou City, Fujian Province. Referred to as "melting", it is called jade melting. Located in the eastern coast of Fujian Province, it is located in the central hub of the economic zone on the west side of Fujian Strait and the central city of the provincial capital.