37 marketing and technical expertise provided to customers and service providers in the field of natural gas vehicle refueling and conversion; providing natural gas for vehicles; turnkey station engineering namely station design, station engineering and procurement and construction of natural gas refueling stations; vehicle repair maintenance services related to natural gas vehicle conversion and natural gas refueling station services; fleet support services, namely financial management and operations management of fleet vehicles on behalf of customers; rental of natural gas compressors for use in the natural gas industry