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Condensed Consolidated Statements of Operations (Unaudited) (USD $) | 3 Months Ended
--- | ---
Feb. 28, 2013 | Feb. 29, 2012
Net sales | $ 8,415,104 | $ 6,312,216
Cost of goods sold | 6,045,941 | 4,835,995
Gross profit | 2,369,163 | 1,476,221
Expenses: |  |
Engineering | 102,567 | 85,060
Selling | 489,736 | 366,783
General and administrative | 1,064,112 | 662,125
Total expenses | 1,656,415 | 1,113,968
Income from operations | 712,748 | 362,253
Other income (expense): |  |
Interest expense | (89,463) | (93,041)
Other | 638,142 | 19,865
Total other income (loss) | 548,679 | (73,176)
Income before income taxes | 1,261,427 | 289,077
Current tax expense | 442,173 | 57,075
Deferred tax expense |  | 38,504
Net income | $ 819,254 | $ 193,498
Net income per share: |  |
Basic net income per share (in Dollars per share) | $ 0.20 | $ 0.05
Diluted net income per share (in Dollars per share) | $ 0.20 | $ 0.05
Weighted average outstanding shares used to compute basic net income per share (in Shares) | 4,035,052 | 4,028,193
Weighted average outstanding shares used to compute diluted net income per share (in Shares) | 4,047,134 | 4,046,125

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