Trade Accounts and Bills Receivable, Net (Details 1) - USD ($)	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Trade Accounts and Bills Receivable, net [Abstract]
Balance at beginning of period	$ 4,650,686	$ 3,657,173
Provision for the period	871,483	241,549
Reversal - recoveries by cash	(198,297)	(170,387)
Charged to consolidated statements of operations and comprehensive (loss) income	673,186	71,162
Foreign exchange adjustment	(86,308)	91,389
Balance at end of period	$ 5,237,564	$ 3,819,724

Amount of allowance for credit loss on accounts receivable, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant