1, Tianjin: Cement stone is the dominant non-metallic mineral in Tianjin, and there are 5 proven mineral deposits in industrial reserve. The ore body occurs in the limestone of Tieling formation in Jixian system of Mesoproterozoic, containing 48% ~ 50.7% Cao. The five proven deposits in industrial reserve are Dongying Fang, Zhuanshan, Tieling, Laohuding and Yushan, with proven reserves of 654.38+0.8 billion tons. Marl minerals have become an important resource of Tianjin cement industry.
2. Chongqing: Chongqing's economic construction has basically formed a pattern of coexistence of large agriculture, large industry, large transportation and large circulation, and it is the largest economic center city in southwest China and the upper reaches of the Yangtze River.
3. Shenzhen: Shenzhen is the "testing ground" for China's economic reform and opening up. It has taken the lead in establishing a relatively perfect socialist market economic system, created a miracle in the history of world industrialization, urbanization and modernization, and is a wonderful epitome of China's brilliant achievements in the past 30 years of reform and opening up.
4. Shenyang: Shenyang is a national historical and cultural city and an important birthplace of Chinese civilization. Known as "once the birthplace, two generations of emperors are the capital". It has long been the political, economic and cultural center of northeast China, the most important heavy industry base in China, and has the reputation of "the eldest son of the country" and "the Ruhr of the East".
5. Tangshan: It is the central city of Beijing-Tianjin-Tangshan industrial base and the sub-central city in the northeast of Beijing-Tianjin-Hebei urban agglomeration. Total area 13472 km2. In the whole year, the industrial added value was 377.26 billion yuan, up by 4.5% over the previous year, of which the industrial added value above designated size was 35 189 billion yuan, up by 4.7%.
References:
Heavy Industry City-Baidu Encyclopedia