Trade Accounts and Bills Receivable, Net (Details 1) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Trade Accounts and Bills Receivable, net [Abstract]
Balance at beginning of year	$ 4,650,686	$ 3,657,173
Provision for the year	1,656,128	1,613,402
Reversal - recoveries by cash	(934,391)	(567,042)
Charged to consolidated statements of operations and comprehensive (loss) income	721,737	1,046,360
Write off	(431,684)
Foreign exchange adjustment	326,089	(52,847)
Balance at end of year	$ 5,266,828	$ 4,650,686

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=120391452&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=121611835&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=121599878&loc=SL82895884-210446

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