WESTFALEN AG is a provider of products and services such as petroleum fuels and additives,cartridges, carbon dioxide,ethane,fluorine gas,hexane,hydrofluorocarbons, chlorofluorocarbon (cfc) replacement,hydrogen bromide,hydrogen fluoride,hydrogen iodide,hydrogen phosphide/phosphine,isobutane,krypton,ozone,propylene,sulphur dioxide, compressed or liquefied,tear gas,xenon,compressed and liquefied gases, pure,gases, high purity,inert gas mixtures for modified atmosphere food packaging,calibration gases,laser gases,butane,butadiene,air, compressed,air, liquefied,butylene,carbon dioxide, solid/dry ice,carbon monoxide,propane,chlorofluorocarbons (cfc),chlorofluoroethanes,chlorofluoromethanes,cyclopropane,argon,helium,neon,medical gases,hydrogen,nitrogen,oxygen,carbon dioxide,nitrogen oxides,oxygen for medical use,refrigerating gases,semiconductor gases,aerosol propellants, fluorinated hydrocarbons,methane,ethylene,chlorine,ammonia,hydrogen peroxide,hydrogen chloride,acetylene,hydrogen sulphide.