It is understood that from June this year, 5438+065438+ 10/5 to March next year 15, priority will be given to limiting production of iron and steel enterprises located in urban built-up areas and in the dominant wind direction of the city; Foundry enterprises that use coal and coke all stop production; Enterprises such as cement, brick kilns and ceramics in transmission channel cities and Luoyang and Pingdingshan administrative regions all stopped production.