This product is based foundation oil on deepest refined paraffin base , add the antioxidants and other additive. This product is executive SH0528-1992 standard. Interchangeable use Exxon mobil DTE" Heavy"; Britain Edward high vacuum company "Speedivac";The United States of America company watts to " CS oil";"Gpoil";Italy ord Disen company" Alcatel 100";Germany's company'HE175',' HE200',Japan demitsu  "ACE Vac46", "68"; and the Japanese Matsumura  production such as Neovac MR oil ...etc.