2016DB11/ 450-2016 Safety conditions for catering service units to use bottled liquefied petroleum gas
2007DB11/T 450-2007 Safety management requirements for the use of bottled liquefied petroleum gas in the catering industry
DB11/T 450-2007 Safety management requirements for the use of bottled liquefied petroleum gas in the catering industry was changed to DB11/ 450-2016 Safety conditions for catering service units to use bottled liquefied petroleum gas.