Short-Term Bank Loans (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Short-Term Bank Loans (Details) [Line Items]
Bank loans due amount	$ 5,069,557
Terms of long term bank loans	30 years
Interest rate	2.50%
Revolving credit line	$ 4,558,749
Interest related to the short-term bank loans	95,831	$ 90,815
Interest related bank loans from discontinued operations	$ 0	$ 41,998
Hong Kong [Member]
Short-Term Bank Loans (Details) [Line Items]
Interest rate	3.15%