1962년 '특정공업지구'로 지정되고, 이후 울산·미포국가산업단지와 온산국가산업단지로 개발되면서 울산은 중화학공업도시로서의 면모를 얻었다.
It was designated as a "Specific Industrial District" in 1962, and later developed into Ulsan-Mipo National Industrial Complex and Onsan National Industrial Complex, and Ulsan gained a face as a heavy and chemical industrial city.