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Trade Accounts and Bills Receivable, net (Tables)

6 Months Ended

Jun. 30, 2018

SCHEDULE OF TRADE ACCOUNTS RECEIVABLE [Table Text Block]

		December 31,			June 30,
		2017			2018
Trade accounts receivable	$	42,095,211		$	29,538,119
Less: Allowance for doubtful accounts		(3,700,922	)		(3,623,830	)
		38,394,289			25,914,289
Bills receivable		19,124,323			5,864,148
	$	57,518,612		$	31,778,437

SCHEDULE OF ANALYSIS OF THE ALLOWANCE FOR DOUBTFUL ACCOUNTS [Table Text Block]

		December 31,			June 30,
		2017			2018
Balance at beginning of period	$	2,761,144		$	3,700,922
Provision for the period		839,917			198,619
Reversal - recoveries by cash		(114,542	)		(213,309	)
Charged (credited) to consolidated statements of operations and comprehensive (loss) income		725,375			(14,690	)
Foreign exchange adjustment		214,403			(62,402	)
Balance at end of period	$	3,700,922		$	3,623,830

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- Definition

Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of credit losses for current financing receivables (such as trade and accounts receivable), including a rollforward of the balance. An alternative caption includes allowance for doubtful accounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration