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NSH Oil Purification located at Chongqing ChinaChongqing industry, oil purifier china, purifier Chongqing |
Chongqing is a port city with an area of 82,400 square kilometers, widely acknowledged as the largest industrial and economic center in southwestern China. Chongqing has a long history of 3,000 years. Now, it is a modern city, China’s fourth municipality after Beijing, Shanghai and Tianjin, and it is the largest municipal area and population.
