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9. Concentrations of Risk (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Sales to Three Largest Customers $ 1,939,560 $ 1,694,837 $ 4,914,372 $ 5,700,074
Total percentage of revenue 65.71% 66.20% 60.12% 67.20%
Alpha Gary Corporation
       
Sales to Three Largest Customers 636,918 906,970 2,440,019 2,949,177
General Electric
       
Sales to Three Largest Customers   195,300 382,788 585,900
Kohler Corporation
       
Sales to Three Largest Customers 936,122 592,567 2,091,565 2,164,997
East Penn Corporation
       
Sales to Three Largest Customers $ 366,520