Shanghai Sirui Electronic Instruments CO.,LTD is specialized in the development, manufacture and sales of temperature and humidity display and control instruments.We have more than 20 years experiences in this industry. Sirui currently has over 80 products in four major categories (temperature, humidity, pressure & flow) covering almost all requirements of any customer. Featured in middle and low temperature areas,some of SiRui's LCD and LED thermometers are batch exported, which is extremely popular.