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Property, Plant and Equipment, Net (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Assets pledged for guarantee of Dongfang Paper capital lease	$ 5,439,796		$ 5,782,640
Land use right net values pledged for sale-leaseback financing	6,070,749		5,990,586
Value of land use right pledged for bank loan			$ 12,939,899
Depreciation and amortization	$ 3,930,060	$ 3,730,585
Land use rights [Member]
Property, Plant and Equipment [Line Items]
Term of lease	50 years		50 years
Lease expiration year	From 2061 to 2066.		From 2061 to 2066.
Value of land use right pledged for bank loan			$ 4,762,300

X

- Definition

Lease expiration.

+ References

No definition available.

+ Details

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X

- Definition

Property plant and equipment loan drawn from banking facility.

+ References

No definition available.

+ Details

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X

- Definition

Period of lease in sale leaseback transaction, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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X

- Definition

Value of land use right pledged for sale leaseback financing.

+ References

No definition available.

+ Details

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X

- Definition

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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- Definition

The carrying amount, as of the date of the latest financial statement presented, of other assets which are owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)(i)
-URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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