Henan Zhiyi System Engineering Co., Ltd established in 2004, are a dynamic organization engaged in manufacturing and supplying the intelligent instrumentation such as the toxic gas detector, gas alarm, toxic and harmful gas analyzer, dew point instrument, instrument, hydrogen purity hydrogen analyzer, oil particle analyzer, combustible gas alarm; research and develop the software of our products. We research and develop the main products including handheld gas alarm, gas purity meter, universal intelligent transmitter, toxic gas detector, paperless recorder and remote data monitoring system including a variety of intelligent products: dew point instrument, instrument, hydrogen purity hydrogen analyzer, gas alarm instrument, oil series of particles and systems, widely used in electric power, environmental protection, petroleum, chemical industry, medicine and other fields, and by users of praise and a high degree of recognition.