Discontinued Operations (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash	$ 117,612	$ 883,462	$ 1,332,245
Restricted cash	0	76,512
Notes receivable	0	149,757
Advances to suppliers	0	565,295
Total current assets		15,915,997
Property and equipment, net		21,506,658
Variable Interest Entity, Primary Beneficiary [Member]
Current assets
Cash		591,516
Restricted cash		76,512
Notes receivable		149,757
Accounts receivable, net		4,236,447
Inventory, net		6,414,305
Advances to suppliers		565,295
Receivable from sale of subsidiary		2,791,590
Prepaid expenses and other receivables		880,649
Other current assets		209,926
Total current assets		15,915,997
Property and equipment, net		21,506,658
Intangible assets, net		2,933,874
Total assets		40,356,529
Current liabilities
Short-term bank loans		2,255,658
Accounts payable and accrued liabilities		4,701,501
Advances from customers		1,073,797
Income tax payable		60,065
Other liabilities, current		268,532
Other liabilities, non-current		244,910
Total liabilities		8,604,463
Net assets		$ 31,752,066