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3. Revenue Recognition (Details 1) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Sales to Three Largest Customers | $ 4,678,889 | $ 5,776,359
Total percentage of revenue | 51.79% | 56.50%
Accounts Receivable of Three Largest Customers | $ 214,769 | $ 282,924
Total percentage of accounts receivable | 49.00% | 78.10%
Mexichem |  |
Sales to Three Largest Customers | $ 2,698,770 | $ 3,335,046
East Penn Manufacturing Inc. |  |
Sales to Three Largest Customers | 0 | 512,621
KohlerCorporation [Member] |  |
Sales to Three Largest Customers | 1,441,197 | 1,928,692
Ampacet Corporation |  |
Sales to Three Largest Customers | 538,922 | 0
Nutreco Canada Inc. [Member] |  |
Accounts Receivable of Three Largest Customers | 0 | 25,657
DanaMart [Member] |  |
Accounts Receivable of Three Largest Customers | 143,890 | 0
Teck American Inc |  |
Accounts Receivable of Three Largest Customers | 0 | 241,267
Axens [Member] |  |
Accounts Receivable of Three Largest Customers | 34,912 | 0
Earth Innovations Inc |  |
Accounts Receivable of Three Largest Customers | 35,967 | 0
Ralco Mix Products [Member] |  |
Accounts Receivable of Three Largest Customers | $ 0 | $ 16,000

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