This is a line of low acoustic impact Generators, designed to allow the use of diesel generators in every single environment where noise cannot be tolerated, e.g. during the night. Unlike "normal" power generators, in which noise is simply rejected or absorbed by soundproofing panels, the new ultra-quiet generator contains an air and exhaust gas treatment system, which are mainly responsible for the transmission of noise. This prevents the propagation of sound waves. It is the result of a careful study allowed by years of research. Silengen is a brand of Orefice Generators. All generators are made in Italy under ISO9001 standard quality and complance with EU and IEC law.