ValvTect is one of the leading manufacturers of diesel fuel additives and gasoline additives for bulk treatment of fuels to improve the overall quality of these fuels. ValvTect products help fuel marketers differentiate their fuels from their competition. ValvTect provides strong marketing support with the following brands: Diesel Guard Supreme premium diesel additives and winter additives for the on road and off road diesel markets, AgriGuard for the agricultural market, ThermoGuard Heating Oil Additives for the heating oil market, ValvTect Marine Fuels for marinas and BioGuard Fuel Microbiocides.