Jiangsu Province-based Chinese steel producer Nanjing Iron and Steel Co. Ltd (Nanjing Steel) has announced that in the first half of the current year it achieved an operating revenue of RMB 21.622 billion ($3.17 billion), up 27.5 percent year on year, and a net profit of RMB 2.288 billion ($0.34 billion), increasing by 89.42 percent year on year.