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v3.20.1

Related Party Transactions (Details) |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 14, 2016 USD ($) | Mar. 01, 2015 USD ($) | Dec. 10, 2014 USD ($) | Aug. 07, 2013 USD ($) | Aug. 07, 2013 CNY (¥) | Nov. 23, 2018 USD ($) | Feb. 28, 2018 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Jul. 13, 2015 USD ($) | Mar. 01, 2015 CNY (¥)
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan paid off |  |  |  |  |  |  |  |  |  | $ 94,636 |  | $ 2,249,279 |  |
Amount due to shareholder |  |  |  |  |  |  |  |  |  |  |  | $ 391,374 |  |
Accrued interest |  |  |  |  |  |  |  | $ 127,027 |  |  |  |  |  |
Outstanding loan balance |  |  |  |  |  |  |  | 2,258,260 |  | 2,293,512 |  |  |  |
Amount due to shareholder |  |  |  |  |  |  |  | 617,433 |  | 483,433 |  |  |  |
Lease expiration date, description |  |  |  | August 2016 | August 2016 |  |  |  |  |  |  |  |  |
Mr Zhenyong Liu [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan paid off |  |  |  |  |  |  | $ 20,400 |  |  |  |  |  |  |
Loans payable to related party |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of related party loans |  |  |  |  |  |  |  |  |  |  | $ 6,012,416 |  |  |
Interest paid |  |  |  |  |  |  |  |  |  |  | $ 288,596 |  |  |
Accrued interest |  |  |  |  |  |  |  | 42,342 |  | 43,003 |  |  |  |
Term of loan | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |
Loan from related parties, interest expense |  |  |  |  |  |  |  |  | $ 24,316 |  |  |  |  |
Chief Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans payable to related party | $ 2,883,091 | $ 16,936,952 |  |  |  |  |  |  |  |  |  |  | $ 4,324,636 | ¥ 120,000,000
Accrued interest |  |  |  |  |  |  |  |  |  | 197,009 |  |  |  |
Term of loan |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Outstanding loan balance |  |  |  |  |  |  |  | 193,981 |  |  |  |  |  |
Chief Executive Officer [Member] | Mr Zhenyong Liu [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued interest |  |  |  |  |  |  |  | 598,116 |  | 607,453 |  |  |  |
Dongfang Paper [Member] | Mr Zhenyong Liu [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan paid off |  |  |  |  |  | $ 158,651 |  |  |  |  |  |  |  |
Other payables and accrued liabilities |  |  |  |  |  |  |  | $ 361,793 |  | $ 367,441 |  |  |  |
Loans payable to related party |  |  | $ 8,483,083 |  |  |  |  |  |  |  |  |  |  |
Interest rate on loans |  |  | 4.35% |  |  |  |  |  |  |  |  |  |  |
Repayment of related party loans |  |  |  |  |  | $ 3,768,579 | $ 1,507,432 |  |  |  |  |  |  |
Hebei Fangsheng [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price of industrial land use rights |  |  |  | $ 2,770,000 |  |  |  |  |  |  |  |  |  |
Sale price of industrial building |  |  |  | 1,150,000 |  |  |  |  |  |  |  |  |  |
Sale price of dormitory buildings |  |  |  | $ 4,310,000 |  |  |  |  |  |  |  |  |  |
Industrial building lease term |  |  |  | 3 years | 3 years |  |  |  |  |  |  |  |  |
Rental payment |  |  |  | $ 142,998 | ¥ 1,000,000 |  |  |  |  |  |  |  |  |

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