Lp fuel limited is London based autogas conversions and lpg cng kits parts supplier.All our products have ER7 approval certificates.Lp fuel limited sell NLP kits many coutries around the world and technicaly suport NLP LPG CNG manufacturer company. NLP conversion kits and parts has one year warranty from manufacturing company.Lp fuel Limited is always happy to discuss and help your researche about alternative fuel energy and products..Regards