Shanghai Yixian Environmental Protection Instrument Co., Ltd. is located in Chedun Industrial Park, Songjiang District, Shanghai. It is a technology innovation enterprise specializing in the research and development of environmental protection online analysis instruments, complete sets of environmental protection online analysis systems, intelligent environmental protection consulting, and operation and maintenance services. Yixian Company has high-quality human resources, high-tech independent technology, rigorous production quality standards, and has passed ISO9001 quality management system certification. Currently, it has obtained several invention, utility model, and appearance intellectual property patents. The company's products are mainly used for continuous monitoring of atmospheric pollutant emissions from sources such as electricity, steel, cement, petrochemicals, chemical engineering, coal and gas boilers, and waste incineration. They are also important technical equipment for environmental protection departments at all levels to strengthen environmental supervision. At present, our company mainly cooperates with internationally renowned enterprises such as Axetris from Switzerland, BARTEC from Germany, ABB Germany, and Knick from Germany. We specialize in providing a complete set of explosion-proof online gas chromatography analysis systems, explosion-proof near-infrared fiber optic trace water analysis systems, explosion-proof oxygen analysis systems, online hydrochloric acid/sulfuric acid concentration meters, YIFIRST mid infrared/near-infrared high-precision ammonia escape analysis systems, non methane total hydrocarbons (NMHC) online analysis systems, VOCs online analysis systems, waste/solid waste incineration high-temperature FTIR flue gas analysis systems, online NOX (total nitrogen) analysis systems, smoke and gas analysis CEMS analysis systems, online analysis pretreatment systems and other series of products. We provide integrated services for online analytical instruments, including selection, sample pretreatment system design, system installation and debugging, and after-sales operation and maintenance. In the past three years, Yixian has been committed to the selection and application research of online analysis systems in the fluoride industry, with mature application experience in multiple projects such as trace moisture analysis applications in the fluoride industry, fluoride oxygen explosion-proof analysis systems, and PFIB highly toxic substance online monitoring devices. All employees of Yixian Company are committed to providing environmental analysis instrument online monitoring solutions, gas monitoring, and other experimental equipment to users in various industries. As a professional technical company in the field of online analytical instruments, our company has been conducting research on the mid infrared ammonia escape analysis system with research talents from Princeton University in the United States since 2017, which is of great significance to the domestic market. In 2018, Yixian Company reached a cooperation agreement with the China Special Equipment Research Institute for a mobile analysis system for burner detection. In 2019, it launched a strategic cooperation with major state-owned power plants in East China for ammonia escape environmental monitoring. In 2020, its products entered the domestic cement and metallurgical industries, providing support for local private enterprises and steadily increasing its customer base. Yixian Company focuses on being a professional provider of environmental monitoring analytical instruments and equipment, extending the entire industry chain to environmental governance, smart environmental protection, consulting and testing services, and realizing the vision of "smart technology, green life". Yixian is willing to practice, innovate, and make progress together with the industry. We always adhere to the business philosophy of "Yinuo Qianjin, quality first", and in the spirit of "actively enterprising and daring to explore", we continuously improve our core competitiveness through innovation in talent, technology, products, and management models. We strive to build our company into a century old enterprise in the environmental monitoring and analysis instrument industry. With the noble mission of "benefiting employees, benefiting society, and protecting the earth", we are willing to join hands with people from all walks of life and customers at home and abroad to create a better world.