Another business is in energy conservation and environmental protection field. The research results of clean, efficient and low nitrogen combustion technology and advanced control technology are applied to natural gas boiler, pulverized coal boiler, grate boiler, fluidized bed boiler and other fields. The application of low nitrogen combustion technology with independent intellectual property rights can ensure low NOx emission of various industrial boilers, industrial furnace, glass furnace, hot blast furnace as well as other industrial fields.