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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2024
Summary of Significant Accounting Policies [Abstract]  
Schedule of Estimated Useful Lives of Property and Equipment Depreciation is calculated using the straight-line method over their estimated useful lives. The estimated useful lives are as follows:
Machinery and electronic equipment   3 to 10 years
Office furniture   5 years
Transportation equipment   4 years
Buildings and facilities attached to buildings   20 years
Schedule of Estimated Useful Lives of Intangible Assets The Company amortizes its franchise right and land use right on a straight-line basis over the contractual term. The estimated useful lives are as follows:
Franchise right   2 years
Land use right   50 years
Schedule of Net Revenues The following table summarizes the net revenues generated from different revenue streams:
   For the Years Ended December 31, 
   2022   2023   2024 
   RMB   RMB   RMB 
Product sales revenue   920,653,911    71,321,462    34,096,450 
Service revenue   62,514,987    7,013,914    6,499,466 
Net revenues   983,168,898    78,335,376    40,595,916 
Schedule of Net Revenues By Geographical Location of Customers

For the years ended December 31, 2022, 2023 and 2024, the Company’s net revenues by geographical location of customers are as follows:

 

   For the Years Ended December 31, 
   2022   2023   2024 
   RMB   RMB   RMB 
PRC   906,347,962    57,485,526    24,986,453 
Hong Kong   33,556,434    16,461    9,467,603 
Singapore   184,738    1,119,872    4,697,243 
The United States   16,278,352    7,115,353    1,094,904 
Others   26,801,412    12,598,164    349,713 
Net revenues   983,168,898    78,335,376    40,595,916