cturers in key regions, and in 80 percent of the sector nationwide by the end of 2025, under a guideline pub
lished by the Ministry of Ecology and Environment on Sunday. The guideline was drafted by the ministry and four other central gove
rnment bodies, including the National Development and Reform Commission, the country’s economic planner.
The guideline sets different limits for various procedures in steel produ
ction. The hourly density of particulate matter in emissions should be below 10 mill
igrams per cubic meter in all procedures. As for sulfur dioxide and nitric oxide discharges, the limit can dif
fer. The hourly concentration of sulfur dioxide, for example, should be below 35 mg/cu m in emissions generated by core pr
ocesses, such as pellet roasting, but the standard is relaxed to 50 mg/cu m for other processes.
At least 80 percent of raw materials and products should be transported v
ia railway, ship and pipeline rather than road transportation, the guideline said.
China is the largest steel-maker in the world. The country produced 928 million metri
c tons of crude steel in 2018, representing 51.3 percent of the world’s output, the ministry said.