4. Revenue Recognition (Details 1) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Sales to Three Largest Customers	$ 1,229,492	$ 1,380,246
Total percentage of revenue	50.50%	52.70%
Accounts Receivable of Three Largest Customers	$ 245,684	$ 312,943
Total percentage of accounts receivable	59.50%	56.50%
Kohler Corporation [Member]
Sales to Three Largest Customers	$ 316,772	$ 445,178
Accounts Receivable of Three Largest Customers	0	149,124
Ampacet Corporation
Sales to Three Largest Customers	184,142	0
East Penn Manufacturing Inc.
Sales to Three Largest Customers	0	148,643
Mexichem Speciality Compounds
Sales to Three Largest Customers	728,578	786,425
Accounts Receivable of Three Largest Customers	148,170	135,680
Axens [Member]
Accounts Receivable of Three Largest Customers	38,404	0
Teck America
Accounts Receivable of Three Largest Customers	59,110	0
Nutreco Canada
Accounts Receivable of Three Largest Customers	$ 0	$ 28,139