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Summary of Significant Accounting Policies (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Accounts receivable	$ 17,877,284	$ 10,130,269
Allowance for doubtful accounts	(9,900,704)	(3,754,306)	$ (2,139,765)
Accounts receivable, net	$ 7,976,580	$ 6,375,963

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Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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