Hunan Guorui (GRI) Instrument Co., Ltd. was established in October 2009 in Changsha, Hunan Province, a high-tech enterprise integrating design, R&D, production and sales of advanced sensors and intelligent instrumentation products. The company is famous with comprehensive system supporting solutions for sensors, system services for various applications, and advanced international R&D teams.
The products are widely used in environmental protection, metallurgy, petrochemical, chemical, food. , agriculture, transportation, water conservancy, construction, pharmaceutical, brewing, aviation and scientific research, and exported to more than 100 countries and regions in Asia, Europe and America.
GRI Instrument mainly produces portable gas detection/analysis instruments, toxic/flammable/ explosive gas alarm controllers, gas monitoring systems, TVOC online monitoring systems, infrared gas detection/analysis instruments, indoor air quality detectors, air quality monitoring stations, monitoring and control systems, atmospheric environmental monitoring stations and monitoring and control systems, HVAC temperature and humidity and CO2 detectors and control systems, dust particle detectors, oxygen monitoring and control systems for medical and industrial applications, etc.
The infrared gas detection/ analysis instrument of the instrument production system can completely replace the foreign instruments. The company invested a large amount of money in the field of research and development of new products, and hired domestic and foreign industry experts as the company's product research and development consultants, and cooperated with domestic universities and research institutes. At the same time, working closely with the most advanced supply chain in foreign countries, and striving to maintain the world-class level of products of GRI Instrument;
Till 2014, GRI Instrument's R&D team has won more than 60 product patents and 2 product invention patents. The company uses the world's most advanced instrumentation solutions to improve instrument performance and quality, to provide industry users with the most cost-effective instrumentation and all-round system services
GRI Instrument follows high-quality, efficient and innovative approaches providing our new and old customers with excellent products and good service system.