iwatani | Iwatani Iwatani Corporation,Iwatani International,Iwatani,a general trading company, a general trading house,gas,energy,clean energy,next generation energy,environment,LNG, liquefied natural gas,LPG,liquefied petroleum gas,propane gas,butane gas,industrial gas,air separation gases,Marui Gas,cogeneration system,hydrogen,liquefied hydrogen,liquid hydrogen,ozone,consentrated ozone,gas stove,gas canister,portable cooking stove,HydroEdge,cassette feu Iwatani is Japan’s only LPG operator holding an integrated LPG supply system covering all processes from import to retail to serve the entire country. With approximately 400 …