Shanghai RenjiShanghai Renji is a Chinese company specializing in the research, development, production, and sales of radiation monitoring instruments and radiation protection equipment. The company's main products include personal dosimeters, radiation inspection instruments, environmental monitoring instruments, and channel-type radiation detection equipment, which are widely used in the nuclear industry, environmental protection, healthcare, research institutes, and security inspection fields. With high precision and reliability, it enjoys a certain reputation in the radiation monitoring industry.