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v3.25.2

Risks and Uncertainties (Details) - CNY (¥) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Risks and Uncertainties [Line Items] |  |  |  |
Bank deposits (in Yuan Renminbi) | ¥ 500,000 |  | ¥ 500,000 |
Customer Concentration Risk [Member] | Customer One [Member] | Revenue Benchmark [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage | 22.00% | 21.20% | 21.50% | 21.90%
Customer Concentration Risk [Member] | Customer One [Member] | Accounts Receivable [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage |  |  | 29.00% |
Customer Concentration Risk [Member] | Customer Two [Member] | Revenue Benchmark [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage | 16.20% | 19.50% | 16.60% | 20.00%
Customer Concentration Risk [Member] | Customer Two [Member] | Accounts Receivable [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage |  |  | 20.00% |
Customer Concentration Risk [Member] | Customer Three [Member] | Revenue Benchmark [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage | 15.70% | 16.00% | 15.80% | 15.20%
Customer Concentration Risk [Member] | Customer Three [Member] | Accounts Receivable [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage |  |  | 14.50% |
Customer Concentration Risk [Member] | Customer Four [Member] | Revenue Benchmark [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage | 14.50% | 14.50% | 14.90% | 13.90%
Customer Concentration Risk [Member] | Customer Four [Member] | Accounts Receivable [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage |  |  | 12.20% |
Customer Concentration Risk [Member] | Customer Five [Member] | Revenue Benchmark [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage | 12.00% | 12.10% | 12.20% | 11.60%
Customer Concentration Risk [Member] | Top 10 Customers [Member] | Revenue Benchmark [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage | 99.60% | 100.00% | 99.40% | 99.30%
Supplier Concentration Risk [Member] | Supplier [Member] | Purchases Raw Material [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage |  |  | 10.00% |
Supplier Concentration Risk [Member] | Two Suppliers [Member] | Purchases Raw Material [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage | 50.10% | 27.10% |  | 40.30%
Supplier Concentration Risk [Member] | Three suppliers [Member] | Purchases Raw Material [Member] |  |  |  |
Risks and Uncertainties [Line Items] |  |  |  |
Concentration risk, percentage |  |  | 49.60% |

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