dear aarush,good evening,i have made in british emperore functional petromax, not any symbols on the tank and not posted EIC but function in outdoor sunlight aria only, but not any function in indoor temperature,whater get increasing and over boiling when it kept in sunlight aria,10ml water increasing within 1 hour and water boiling 100*c within 20 minuts, are you real buyer? are you interesting for this item pls reply me otherwise pls don't wast the time pls.