Highest PAO & POLYOL-ESTER content in the industry standard. Boron Nitride added for the efficient lowering of oil temperature to more effectively resolve the high oil temperature caused by the high-heat environment and slow driving in the urban areas and reduce engine loading, extending engine life. The GTL base oil comes from SHELL GLOBAL, GROUP IV PAO and GROUP V POLYOL-ESTER come from U.S.A and BELGIUM. High-end ingredients are used to provide the experience of good oil. It is truly “certified” by the American Petroleum Institute (API) for the highest quality without deceiving consumers through the “conformity” of certification.