It is reported that the first level early warning for heavily polluted weather in Zhengzhou has lasted for five days. Today, the government decided to further strengthen the first level response to the red early warning, demanding that from 00: 00 on February 26, all production, construction, slag and soil transportation and material transportation should be stopped. The "three members" of the district organization are stationed on the scene, and strict supervision and implementation are in place. According to this news, SMM Iron and Steel immediately conducted research on the Zhengzhou steel market, according to steel traders, Zhengzhou is only part of the construction site shutdown, there are still sites at the risk of being punished secretly construction, the resumption of production date is uncertain. At the same time, we also asked the local steel mills in Henan about the relevant information. Steel mills reflect that under this notice, the site has not been completely shut down, and it is expected that the shutdown site will resume construction work after the air quality has improved. The notice does not affect the production of steel mills and orders, mainly due to the fact that production of building materials in steel mills has been reduced prior to this notification (production has been stopped due to insufficient billet and large threads). From March 21 to March 7, the hot coil production line also stopped production and carried out routine maintenance for a period of two weeks, which is expected to affect the hot coil production of about 10,000 tons per day.