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3Beijing Century Jiantong Technology Co., Ltd. was established in 2002 and is a high-tech enterprise dedicated to the manufacturing of intelligent instruments and sensors. The measurement range includes temperature, humidity, heat flux, thermal radiation, solar radiation, wind speed, airflow, noise, illumination, meteorology, etc; The product is widely used in fields such as building environment, HVAC, industrial environment, ecological meteorology, occupational health, public health, and new energy utilization.