On November 2, the General Office of the Ministry of Ecology and Environment issued the “Notice on Printing and Distributing the “Comprehensive List of Environmental Protection (2021 Edition)” (Environmental Office Comprehensive Letter [2021] No. 495). In the “Comprehensive List of Environmental Protection (2021 Edition)”, blue charcoal/coke/pitch (except for tar distillation using atmospheric, vacuum or atmospheric and vacuum continuous distillation processes) in coking (industry code 2520) in the traditional iron and steel industry, steel Rolled (industry code 3130) chromium-plated steel sheet (except trivalent chromium electroplating process)/color-coated plate (except chromium-free color coating process) products, ferroalloy smelting (industry code 3150) metal manganese/metal silicon/metal chromium products , The series of products produced by the hot-dip galvanizing process in steel (industry code 3208) are “highly polluting” products; iron-making (industry code 3210) and steel-making (industry code 3220) products are not classified as “highly polluting” and “high environmental risk” “product.