Key words: Stationary sources of flue gas emissions continuous monitoring system, on-line monitoring system, volatile organic compounds, volatile organic compounds analyzer total phosphorus of water quality automatic analyzer, the total nitrogen of water quality automatic analyzer, the removable low dust monitor, monitor dust, temperature monitoring instrument online of pressure flow, flue gas analyzer, an extraction method of high temperature flue gas analyzer, portable flue gas analyzer, the water quality automatic sampler, Nitrogen oxide converter, water quality multi-parameter online monitor, ammonia nitrogen automatic monitor,COD online monitoring analyzer