Beijing Cohen Ruida Technology Co., Ltd. is a diversified high-tech company specializing in instrumentation. The company has experienced and solid technical personnel. The company attaches great importance to the development of new products and technologies, as well as system innovation. We provide customers with high-quality instruments and meters at competitive prices, and meet their current and future needs with fast and professional services, bringing predictable returns to users and winning their high praise and trust. The product is widely used in the fields of petrochemicals, rubber, light industry, pharmaceuticals, environmental protection, electricity, metallurgy, military industry, and metrology. Adhering to the business philosophy of "first-class products, first-class technology, and first-class services", we continuously develop and grow. Having a stable, strong, pragmatic, excellent, and dynamic elite team lays a solid foundation for providing customers with satisfactory products and high-quality services. In the rapidly developing information age, we have developed professional technological capabilities and rich marketing experience. ROTRONIC is a large-scale instrument manufacturing company located in the Swiss precision product manufacturing center - Bassersdorf, with the aim of "technology as the leader, market-oriented, and serving society". It is a sensing technology company for temperature, humidity, and humidity related parameters. With over 50 years of research history and instrument manufacturing experience in humidity, ROTRONIC has multiple subsidiaries and more than 100 professional agents or offices in the United States, Germany, France, the United Kingdom, Taiwan, and other countries worldwide. Its humidity sensors, transmitters, and humidity monitoring systems cover various fields around the world. ROTRONIC focuses on the research of humidity theory, the development and use of new sensing technologies, the accuracy and rigor of data, manufacturing costs, training and service, and stable operation. Over the past half century, it has created this global humidity brand. Advanced electronic technology and manufacturing processes, including temperature and humidity handheld instruments, temperature and humidity transmitters, water activity instruments, temperature and humidity recorders, humidity generators, etc. Applied in drying process, meteorology, food, papermaking, semiconductor, chemical industry and other fields. Michell was founded in 1974 by Andrew Michell, who successfully developed an advanced humidity sensor. With over forty years of experience in innovation, design, and production of dew point products, we are now a renowned manufacturer of industrial measuring instruments and enjoy an international reputation in the industrial field. The main products include dew point transmitters, dew point meters, etc. Analytical Industries Inc (AII) was founded in 1994, primarily producing oxygen sensors and analyzers for process control and safety applications in the industrial, medical, and diving markets. Advanced electrochemical sensing technology and its solutions have been widely applied worldwide. At the same time, AII will continue to adhere to manufacturing processes that improve quality.