In addition to the reduction of production that leads to the decrease in emissions, CSC deployed following measures for improvement in the last five years: a. Reduction of conventional emissions: The main control and prevention measures included the increase of anthracite coal for low nitrogen and low sulfur production, environmental coal with low nitrogen and sulfur contents for coalburning furnaces, additional equipment for the discharge gas circulating system at sinter #De-NOx efficiency of coal-burning furnaces, additional dust arrestor system equipment at the stationary sources, and sealing enhancement for fugitive sources of raw material feeding as well as conveyance and the cooling facilities of furnace slag.