Commodity2005200620072008200920102011
Multiple-walled insulating units of glass$27,417,848$27,531,707$33,951,765$36,421,079$37,533,021$26,942,759$45,555,307
Total$27,417,848$27,531,707$33,951,765$36,421,079$37,533,021$26,942,759$45,555,307