WESTFALEN AG ay isang tagapagbigay ng mga produkto at serbisyo tulad ng petroleum nagbibigay lakas at additives,cartridge, carbon dioxide,uri ng gas,fluorine gas,hexane,hydrofluorocarbons, chlorofluorocarbon (cfc) kapalit,hydrogen bromuro,hydrogen plurayd,hydrogen yodido,hydrogen pospayd / phosphine,isobutane,kripton,osono,propylene,sulphur dioxide, compressed o lusaw,tirgas,xenon,compressed at tunaw na mga gas, dalisay,gas, mataas na kadalisayan,hindi gumagalaw gas mixtures para sa binagong packaging kapaligiran pagkain,pagkakalibrate gases,laser gases,gasolinang,butadiene,naka, compressed,air, tunaw,butylene,carbon dioxide, solid / dry yelo,karbon monoksid,propane,chlorofluorocarbons (cfc),chlorofluoroethanes,chlorofluoromethanes,cyclopropane,argon,helium,neon,medikal na mga gas,haydrodyen,nitroheno,oksiheno,carbon dioxide,nitrogen oxides,oxygen para sa mga medikal na paggamit,refrigerating gases,semiconductor gases,erosol propellants, fluorinated hydrocarbons,mitein,ethylene,murang luntian,amonyako,agwa-oksihenada,hydrogen klorido,asetileno,hydrogen sulpid.