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v3.25.3

Commitments and Contingencies (Details) | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) a | Sep. 30, 2025 CNY (¥) | Sep. 30, 2025 CNY (¥) a | Dec. 31, 2024 USD ($) | Dec. 31, 2024 CNY (¥) | Jun. 14, 2024 CNY (¥) | Dec. 31, 2023 CNY (¥) | Aug. 07, 2013 USD ($)
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |
Annual rental payment | $ 139,698 | ¥ 1,000,000 |  |  |  |  |  |
Outstanding commitments amount | 3,478,995 |  |  | $ 3,436,091 |  |  |  |
Guaranteed long-term loan | 4,362,818 |  |  |  | ¥ 31,000,000 |  |  |
Accrued litigation cost | $ 498,439 |  |  |  |  |  |  |
Xushui Land Lease [Member] |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |
Area of land (in Acres) | a | 32.95 |  | 32.95 |  |  |  |  |
Lease term | 30 years |  | 30 years |  |  |  |  |
Expiration term | December 31, 2031 | December 31, 2031 |  |  |  |  |  |
Annual rental payment | $ 16,764 | ¥ 120,000 |  |  |  |  |  |
Lease renewable term | 30 years |  | 30 years |  |  |  |  |
Jie Ping and Tengsheng Paper [Member] |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |
Bank deposits (in Yuan Renminbi) | ¥ |  |  | ¥ 6,700,000 |  |  |  | ¥ 3,350,000 |
Loan amount (in Yuan Renminbi) | ¥ |  |  |  |  |  | ¥ 3,320,000 |  |
Employee One [Member] |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |
Building located employee |  |  |  |  |  |  |  | $ 2,770,000
Employee Two [Member] |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |
Building located employee |  |  |  |  |  |  |  | 1,150,000
Employee Three [Member] |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |
Building located employee |  |  |  |  |  |  |  | $ 4,310,000
Minimum [Member] |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |
Expected payment term | 1 year | 1 year |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |
Expected payment term | 3 years | 3 years |  |  |  |  |  |

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