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Condensed Statement of Operations and Comprehensive Income (Loss) (Unaudited) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Income Statement [Abstract]    
Net sales $ 3,146,345 $ 2,817,599
Cost of goods sold 2,213,878 2,113,631
Gross profit 932,467 703,968
Operating expenses:    
Selling 352,780 422,665
General and administrative 292,552 339,534
Research and development 308,667 258,512
Total 953,999 1,020,711
Operating profit (loss) (21,532) (316,743)
Other income (expense):    
Interest income 7 9
Other, net (14,200) (16,328)
Total other income (expense), net (14,193) (16,319)
Income (loss) before income taxes (35,725) (333,062)
Income taxes (benefit) 1,331 512
Net income (loss) (37,056) (333,574)
Other comprehensive income (loss):    
Foreign currency translation adjustments 362 (9,955)
Unrealized gain (loss) for the period    12,800
Net comprehensive income (loss) $ (36,694) $ (330,729)
Basic and diluted net income (loss) per share $ 0.00 $ (0.05)
Weighted average common and common equivalent shares:    
Basic and diluted 7,982,704 6,973,704