Chongqing-based Chinese steel producer Chongqing Iron and Steel Co. (Chongqing Steel) has announced an operating revenue of RMB 5.152 billion ($0.82 billion) for the first quarter of the current year, up 211.34 percent year on year, and a net profit of RMB 350 million ($55.4 million) for the given quarter, constituting the company's best-ever profit for a first quarter, compared to a net loss of RMB 594 million in the same quarter last year.