Maxtop Hydrosynthetic heat transfer fluid (MTQD320) is a kind of high performance heat transfer oil, which is refined by high temperature and high pressure hydrocracking of highly saturated hydrocarbon base oil and added with self-developed compound additives. It has thermal stability and thermal oxidation stability, as well as excellent coking resistance and thermal conductivity retention. In operation, the acid value and carbon increase of the heat transfer oil is very small, and it will not be coking in the boiler system, thus saving energy, extending service life and reducing maintenance costs. In addition, it has excellent low temperature fluidity, easy cold start, and has good self-cleaning and metal surface protection properties. Suitable for closed or open system, the higher oil film temperature can reach 320℃, the higher main body temperature can reach 300℃.