Qingdao Zhongrui Intelligent Instrument Co., Ltd. was established in 2007, focusing on the research and application of portable environmental monitoring instruments, clean room testing and evaluation, biosafety, metrological traceability and other testing instruments. For over a decade, Zhongrui has focused on core technology, delved deeply into fine work, and obtained over 300 national patents and benefits. It has been awarded the titles of National High tech Enterprise, National High tech Enterprise, Shandong Gazelle Enterprise, and Top Five Scientific Instrument After sales Service Enterprise. The product has won titles such as China Industrial Design Red Star Award, Shandong Province Science and Technology Progress First Prize, and Shandong Province Famous Brand. We have 28 offices nationwide, dedicated to providing more professional products and thoughtful services for environmental protection, research institutes, testing institutions, disease control and pharmaceutical companies, and other units.