About Us

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  Hun Hunan Gri Instrument Co., Ltd. Founded on Environmental Science and Technology Industrial Park in Hunan Province in 2009, Hunan GuoRui Instrument Co.Ltd is a high-tech enterprise based on advanced sensors and instrumentation design, development, and production, the company is mainly specialized in the development, production and marketing of various types of sensors, transmitters, analytical instruments, monitoring and control instrumentation, industrial modules, data acquisition; R & D and marketing of various types of environmental monitoring systems, process control systems, special control system application software and embedded systems; installation and maintenance services of various types of environmental monitoring projects, process control engineering; our products widely used in  the telecommunications, electric power, petrochemical, environmental protection, medical, security testing, HVAC, etc.
  Gri Instrument mainly produce hand-held of gas detectors and leak detectors, fixed gas detectors, wall-mounted gas detectors, gas alarm host, on-line gas analyzers, portable gas analyzers, various temperature and humidity transmitters and controllers, pressure transmitters, PH value detectors and water quality testing equipments, quality flow meters, ultrasonic flow transmitters and a variety of industrial control modules and control systems.
  The company follows high-quality, efficient and innovative approaches provide our new and old customers with excellent products and good service system.