Chengde Longzhida Intelligent Instrumentation Technology Co., Ltd. is a modern high-tech enterprise integrating manufacturing, software development, product integration, and information services. In recent years, the company has invested heavily in the introduction of talents, new product research and development, and based on market demand, based on the scientific development concept and people-oriented philosophy, it has actively researched and developed non-contact IC card series products-IC started to control water devices and water meters. , Electric meters, gas meters, heat meters, etc. The application of IC card smart water meters with Tsinghua University as a successful case has successfully established Chengde Longzhida's position in the smart water meter production industry.