1ISO9001,safe&nontoxic,faster 2.heat up food,coffe,chanfing dish conveniently 3 smoke,ash&odor free 4longer burn than others ... Wick Fuel for chafing dish ---A solution to safety problem,smoke,ash,odor double wick ... the same use as spirit lamp. Usage:Can be widely used in coffee shop, hot pot shop hotel, or open country ...