The following key technical equipment belong to environmental protection equipment: reverse osmosis membrane technology equipment, leachate treatment technology equipment, sludge drying and sludge incineration technology equipment, sewage treatment high-efficiency energy-saving aeration equipment, high-temperature-resistant large-capacity bag filter, smoke Gas desulfurization large-scale oxidation fan, demister, circulating pump, motor vehicle exhaust purification technology and equipment, electric bag composite dust removal technology and equipment, portable pollution accident emergency monitoring equipment, etc.