Euro Tech Holdings Company Limited primarily distributes water treatment equipment, laboratory instruments, analyzers, test kits and related supplies, and power generation equipment to commercial customers, and governmental agencies in Hong Kong and the People's Republic of China. The company operates in two segments, Trading and Manufacturing, and Engineering. It sells analytical instruments, such as spectrophotometers, colorimeters, chromatographs, mass spectrometers, flow injector analyzers, automated sample preparation workstations, and atomic spectrometers; environmental monitoring instruments comprising air and water quality monitoring instruments; sample pre-treatment equipment; and general-purpose laboratory instruments consisting of water quality monitoring and analysis equipment. The company also distributes general testing and measuring equipment comprising multi-channel digital and analogue recorders, signal amplifiers, and calibration equipment for energy conservation, renewable energy equipment, power quality analyzers, and continuous emissions monitoring systems; and air pollution control systems to power plants, railway and aero-space industries, utilities, educational institutions, and telecommunications companies. In addition, it offers process control systems, including sensors, temperature and pressure gauges, power and energy consumption meters, flow meters, valves, temperature and pressure transmitters and control devices, and temperature and pressure calibrators, as well as moisture, power, energy, and harmonic analyzers; systems engineering services; and maintenance, installation assistance, and calibration services. Further, the company distributes programmable logic controllers, telemetry units, and supervisory control and data acquisition systems and software. Euro Tech Holdings Company Limited was founded in 1971 and is headquartered in Hong Kong, Hong Kong.