I 'an Zhantian Electronic Technology Co., Ltd. (Note: Hereinafter referred to as the "science and technology exhibition day") located in xi 'an high-tech industrial park, is specialized is engaged in petroleum, chemical, pharmaceutical, electric power industries such as intelligent automation instrument research and development and production of high-tech enterprises, is China's information industry chamber of commerce in radio frequency (RF) and electronic tag branch, vice President of units and xi 'an high-tech enterprises association director unit, the application of the pilot project, The company has passed ISO9001-2008 quality management system certification, and has more than 30 employees, including more than 20 software and hardware engineers, 1 doctor, 9 master, and more than 80% bachelor degree. Zhantian Technology has been committed to the research and development and improvement of level measurement and control, Internet of Things for many years. The company's portable ultrasonic level gauge has brought revolutionary innovation to non-contact level measurement in the field inspection of closed containers, fire-fighting container equipment and ship oil tank industries. Using proprietary technology, intelligent type ultrasonic liquid level switch is stuck outside, intelligent type ultrasonic liquid level meter is stuck outside has oil, petrochemical, chemical, electric power, metallurgy, medicine, food and so on system widely used, and in most of domestic chemical occasions airtight containers use, one hundred kinds of medium type ultrasonic liquid level switch is stuck outside almost become the essential of oil tank farm in refining and petrochemical industry transformationAlarm instrument, highly praised by the majority of customers and most of the design institute recognition and recommendation, 09 became the national industry standard, making the external ultrasonic level meter become the mainstream instrument of dangerous chemical level measurement, external attached ultrasonic level switch become the first choice of tank area transformation instrument, Zhantian Technology has developed into a comprehensive Iot enterprise covering liquid level measurement, sensors, sensing layer, transmission layer and application layer.