As of September 30, 2021 and December 31, 2020, land use rights represented two parcels of state-owned lands located in Xushui District and Wei County of Hebei Province in China, with lease terms of 50 years expiring in 2061 and 2066, respectively.

Depreciation and amortization of property, plant and equipment

3,500,145

$ 3,805,389

11,659,670

$ 11,301,703

Property, plant and equipment, net (Details) [Line Items]

Land use right net values

5,937,242

6,010,359

Property, plant and equipment, net (Details) [Line Items]

Property, plant and equipment, net (Details) - USD ($)	3 Months Ended		9 Months Ended
Property, plant and equipment, net (Details) - USD ($)	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Property, plant and equipment, net (Details) [Line Items]
Term of lease, description			As of September 30, 2021 and December 31, 2020, land use rights represented two parcels of state-owned lands located in Xushui District and Wei County of Hebei Province in China, with lease terms of 50 years expiring in 2061 and 2066, respectively.
Land use right net values	$ 8,666,660		$ 8,666,660		$ 8,614,194
Depreciation and amortization of property, plant and equipment	3,500,145	$ 3,805,389	11,659,670	$ 11,301,703
Dongfang Paper [Member]
Property, plant and equipment, net (Details) [Line Items]
Amount of property, plant and equipment net value	1,313,720		1,313,720		2,349,796
Land use right net values	5,937,242		5,937,242		6,010,359
Hebei Tengsheng [Member]
Property, plant and equipment, net (Details) [Line Items]
Land use right net values	$ 5,594,011		$ 5,594,011		$ 5,560,146