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v3.21.1

Summary of Significant Accounting Policies and Practices (Tables) | 12 Months Ended
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Dec. 31, 2020
Accounting Policies [Abstract] |
Schedule of property and equipment estimated useful lives |
Buildings |  | 5 – 35 years
Machinery and equipment |  | 1 – 15 years
Office equipment |  | 1 – 5 years
Motor vehicles |  | 5 – 10 years
Schedule of exchange rates |
Year ended December 31, 2019 |  |  |
Balance sheet, except for equity accounts |  | RMB 6.9630 to US$1.00 |
Income statement and cash flows |  | RMB 6.9073 to US$1.00 |
Year ended December 31, 2020 |  |  |
Balance sheet, except for equity accounts |  | RMB 6.5286 to US$1.00 |
Income statement and cash flows |  | RMB 6.9032 to US$1.00
Schedule of inangible assets amartization period |
Computer software |  | 10 years |
Schedule of unrecognized tax benifits |
|  | Gross UTB |  |  | Surcharge |  |  | Net UTB |
Balance as of January 1, 2019 |  | $ | 7,129,285 |  |  |  | - |  |  |  | 7,129,285 |
Decrease in unrecognized tax benefits taken in current period |  |  | (86,703 | ) |  |  | - |  |  |  | (86,703 | )
Balance as of December 31, 2019 |  |  | 7,042,582 |  |  |  | - |  |  |  | 7,042,582 |
Increase in unrecognized tax benefits taken in current year |  |  | 468,600 |  |  |  | - |  |  |  | 468,600 |
Balance as of December 31, 2020 |  | $ | 7,511,182 |  |  | $ | - |  |  | $ | 7,511,182 |

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