Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current assets
Cash	$ 3,214,651	$ 4,264,767
Accounts receivable, net	3,313,330	2,273,189
Prepaid expenses	235,358	133,607
Inventories	1,162,504	1,003,623
Asset held for sale	258,847
Total current assets	8,184,690	7,675,186
Property, plant and equipment, net	8,172,914	8,226,009
Intangible assets, net	2,569,445	3,686,111
Other noncurrent assets	58,278	51,887
Total assets	18,985,327	19,639,193
Current liabilities
Accounts payable	784,292	721,361
Accrued expenses	1,197,524	631,860
Current portion of long-term debt, net of discounts	4,820,299	4,578,759
Total current liabilities	6,802,115	5,931,980
Long-term debt, less current portion, net of discounts	5,098,327	6,296,994
Total liabilities	11,900,442	12,228,974
Commitments and contingencies (Note 9)
Shareholders' equity
Common stock - $0.001 par value; 100,000,000 shares authorized; 25,034,747 shares issued and outstanding	25,035	25,018
Additional paid-in-capital	39,758,560	39,440,611
Accumulated deficit	(32,698,710)	(32,055,410)
Total shareholders' equity	7,084,885	7,410,219
Total liabilities and shareholders' equity	$ 18,985,327	$ 19,639,193