Nanjing Hanhua Fluid Technology Co., Ltd. (NCF) is a science and technology-based small and medium-sized enterprise in Jiangsu Province, a key talent supporting enterprise in Nanjing, a high-level talent introduction enterprise in Nanjing, and a high-level entrepreneurial talent introduction enterprise in Gulou District. It is jointly founded by several doctoral students of Northeast University. Our company is mainly engaged in energy management and control of gas system in iron and steel enterprises based on accurate measurement, accurate measurement solutions for industrial enterprises, metering products and system supply. Our company is the first commercial company engaged in precision fluid measurement solutions in China. The scheme has been applied in world-famous enterprises, and the self-made gas calibration acquisition system has been applied in domestic mainstream large-scale iron and steel complex enterprises. Our team has visited more than 450 domestic industrial sites, more than 70 design units and more than 110 solutions.