Huahai Technology has been applied in the laboratory and analytical instrument industry and has made important contributions to it. In the laboratory, cells, bacteria, and microorganisms need to be cultured. In order to achieve certain experimental effects, it is necessary to accurately control the temperature of laboratory instruments such as fermentation tanks, digital microscopes, centrifuges, incubators, liquid chromatographs, and metal constant temperature baths. Semiconductor thermoelectric systems can control their temperature to ensure controllable temperature.