Our branch in Unites States, Landi Renzo USA, achieved an important certification from the American Environmental Protection Agency (EPA) for the new range of Ford vehicles Medium and Heavy duty powered by Natural Gas. This recognition comes after the CARB's (California Air Resources Board) one. These agencies in US are responsible for verifying compliance with the standards of diagnostic interfaces and emissions: only certified systems can be marketed in the country.
Know more about it: NGVAMERICA