Jiangsu Province-based Chinese steel producer Nanjing Iron and Steel Co. Ltd (Nanjing Steel) has announced an operating revenue of RMB 10.37 billion ($1.65 billion) for the first quarter of the current year, up 21.9 percent year on year, while it has posted a net profit of RMB 1.008 billion ($0.16 billion) for the given period, rising by 83.62 percent year on year.