... effiency,high selectivity, no pollution Clove Bud Oil,Essential oil, Natural plan extractSFE-CO2 extraction, green and natrualLow temperature, high effiency ... OilPrincipal components: eugenol, aceteugenol, caryophyllene and so on.functions: Pain relief, anesthesia, stop toothache, antiemetic, anti-neuralgia, anti-bacterial, appetizing, remove ...