Commodity2005200620072008200920102011
Multiple-walled insulating units of glass$438,814$325,150$7,063,722$4,488,815$4,543,607$5,631,747$3,421,220
Total$438,814$325,150$7,063,722$4,488,815$4,543,607$5,631,747$3,421,220