Fluorinert ™ Electronic fluorine liquid FC-770 is a colorless and transparent perfluorinated chemical with good chemical stability, electrical insulation properties, thermal conductivity, and unique surface tension. It can be used as a single-phase or two-phase constant temperature coolant with a wide liquid working temperature range (-125 ° C to 95 ° C) and is used in many low-temperature heat transfer applications, such as reliability testing and cooling of electronic products.