Fuzhou Pubesi Intelligent Technology Co., Ltd. was established in 2015. It is a professional manufacturer engaged in the research and development, production, and service of sensors, instruments, and automation equipment. The company currently has more than 130 employees and a registered capital of 36 million yuan. The company's R&D and production base covers an area of more than 5000 square meters, with professional laboratories and core technologies for multiple water quality analysis sensors. It has nearly 30 patents and more than 30 software copyrights. We have obtained provincial-level high-tech registration and national high-tech enterprise certification, and passed ISO9001 certification in 2018. The total phosphorus water quality online automatic monitoring instrument, permanganate index water quality online automatic monitoring instrument, ammonia nitrogen water quality online automatic monitoring instrument, chemical oxygen demand CODcr online automatic monitoring instrument, and water quality five parameter online monitoring instrument (PH, DO, turbidity, temperature, conductivity) independently developed by the company have all passed the national environmental protection certification, and the company has occupied a place in domestic environmental monitoring. The company always adheres to independent innovation, attaches importance to scientific management of research and development investment and production, and actively engages in multi-faceted contracts with domestic and foreign research institutions. So far, long-term technical cooperation has been established with research institutions such as Chongqing University, Chongqing University of Technology, Fujian Normal University, Changchun Institute of Optics and Fine Mechanics. The R&D department of the company has a total of 36 R&D personnel. The company's independently developed low range and low-power online turbidity measurement sensor and dissolved oxygen sensor have become leaders in this field in China. The company's R&D department is equipped with professional optical and chemical hardware equipment such as a constant temperature box, oscilloscope, logic analyzer, signal generator, adjustable power supply, spectrometer, professional optical platform, spectrometer, integrating sphere, spectrophotometer, analytical balance, ultrasonic oscillator, water purifier, oven, electronic scale, magnetic stirrer, sealing machine, etc. Since its development, the company has established a comprehensive marketing and service network nationwide through its sales team and agent system, and has also become an OEM supplier for many companies in the domestic industry. The company established its foreign trade department in 2018, and now its product sales have expanded globally. The company's technical support department and service team support remote online services, enabling remote debugging, maintenance, fault diagnosis, and remote software upgrades for products.