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Xuzhou saydoi electrical equipment co.,ltd professionally developed and manufactured microcomputer temperature and humidity controller /thermostat, digital temperature panel, temperature and humidity data recorder/logger, refrigeration units, electrical control box, digital hygrometer, digital thermometer,temperature/humidity transmitter, temperature transducer,enthalpy transmitter/transducer, dew point transmitter/transcuder, temperature sensor with excellent quality and competitive prices.they are widely used in hvac/r line, food cold chain, medical low temperature, the pet and aquarium industry.