v3.26.1
Consolidated Balance Sheets (Parentheticals)
Dec. 31, 2025
CNY (¥)
¥ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
CNY (¥)
¥ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Cash and cash equivalents, consolidated VIEs ¥ 9,580,367 $ 1,369,974 ¥ 7,651,695 $ 1,094,178
Accounts receivable, net, consolidated VIEs 18,440,482 2,636,954 8,374,608  
Accounts receivable - a related party, consolidated VIEs 831,436 118,894 424,259  
Inventories, consolidated VIEs 8,280,145 1,184,045 9,165,973  
Other receivables, net, consolidated VIEs 63,517,961 9,082,948 5,318,724  
Advances to suppliers, consolidated VIEs 679,196 97,124 929,167  
Property and equipment, net, consolidated VIEs 1,246,568 178,257 461,362  
Other non-current assets, consolidated VIEs 1,344,232 192,223 831,132  
Accounts payable 44,813,902 6,408,303 25,320,486  
Short-term bank loans 53,000,000 7,578,899 34,958,333  
Long-term bank loans, current, consolidated VIEs 3,700,000 529,093 300,000  
Long-term loans, current 10,000,000 1,429,981 10,000,000  
Salary and welfare payable, consolidated VIEs 14,477,975 2,070,323 15,375,537  
Advance from customers, consolidated VIEs 1,591,131 227,529 1,756,046  
Value added tax (“VAT”) and other tax payable, consolidated VIEs 658,983 94,233 815,462  
Other payables, consolidated VIEs 11,817,379 1,689,865 12,888,750  
Accrued liabilities, consolidated VIEs 14,580,658 2,085,008 9,712,966  
Loans from related parties, current, consolidated VIEs 15,198,309 2,173,329 13,821,875  
Amount due to related parties 2,080,556  
Operating lease liabilities, current, consolidated VIEs 1,545,002 220,932 1,388,863  
Long-term bank loans, noncurrent, consolidated VIEs 11,000,000 1,572,979 8,400,000  
Operating lease liabilities, noncurrent, consolidated VIEs ¥ 1,294,510 $ 185,112 ¥ 1,672,218  
Convertible redeemable preferred shares, par value (in Dollars per share and Yuan Renminbi per share) | (per share) ¥ 0.0001 $ 0.0001 ¥ 0.0001  
Convertible redeemable preferred shares, shares authorized (in Shares) 12,597,228 12,597,228 12,597,228 12,597,228
Convertible redeemable preferred shares, shares issued (in Shares) 12,597,228 12,597,228
Convertible redeemable preferred shares, shares outstanding (in Shares) 12,597,228 12,597,228
Related Party        
Amount due from related parties, consolidated VIEs ¥ 3,637,039 $ 520,090 ¥ 5,632,987  
Accounts payable 7,296 1,043 25,891  
Amount due to related parties 45,966,864 6,573,174 36,829,010  
Long-term loans from third parties 356,390,859 50,963,215 356,690,859  
Third Parties        
Short-term bank loans 610,637 87,320 11,551,614  
Long-term loans, current 200,000 28,600 2,320,082  
Long-term loans from third parties 2,000,582 286,079  
VIEs        
Cash and cash equivalents, consolidated VIEs 8,445,208 1,207,649 7,596,708  
Accounts receivable, net, consolidated VIEs 18,440,482 2,636,954 8,374,608  
Inventories, consolidated VIEs 8,280,145 1,184,045 9,165,973  
Other receivables, net, consolidated VIEs 5,824,886 832,948 5,318,724  
Advances to suppliers, consolidated VIEs 679,196 97,124 929,167  
Property and equipment, net, consolidated VIEs 1,246,568 178,257 461,362  
Other non-current assets, consolidated VIEs 1,344,232 192,223 831,132  
Deferred offering costs, consolidated VIEs 7,437,679  
Accounts payable 44,813,902 6,408,303 25,320,486  
Short-term bank loans 53,000,000 7,578,899 34,958,333  
Long-term bank loans, current, consolidated VIEs 3,700,000 529,093 300,000  
Long-term loans, current 10,000,000 1,429,981 10,000,000  
Salary and welfare payable, consolidated VIEs 14,477,975 2,070,323 15,375,537  
Advance from customers, consolidated VIEs 1,591,131 227,529 1,756,046  
Value added tax (“VAT”) and other tax payable, consolidated VIEs 658,492 94,163 815,462  
Other payables, consolidated VIEs 11,817,179 1,689,838 12,888,550  
Accrued liabilities, consolidated VIEs 14,231,003 2,035,006 9,712,966  
Loans from related parties, current, consolidated VIEs 15,198,309 2,173,329 13,821,875  
Amount due to related parties 2,080,556  
Operating lease liabilities, current, consolidated VIEs 1,545,002 220,932 1,388,863  
Long-term bank loans, noncurrent, consolidated VIEs 11,000,000 1,572,979 8,400,000  
Operating lease liabilities, noncurrent, consolidated VIEs 1,294,510 185,112 1,672,218  
VIEs | Related Party        
Accounts receivable - a related party, consolidated VIEs 831,436 118,894 424,259  
Amount due from related parties, consolidated VIEs 3,637,039 520,090 6,070,945  
Accounts payable 7,296 1,043 25,891  
Amount due to related parties 92,331,116 13,203,174 36,829,010  
Long-term loans from third parties 356,390,859 50,963,215 356,690,859  
VIEs | Third Parties        
Short-term bank loans 610,637 87,320 11,551,614  
Long-term loans, current 200,000 28,600 2,320,082  
Long-term loans from third parties ¥ 2,000,582 $ 286,079  
Class A Ordinary Shares        
Ordinary shares, par value (in Dollars per share and Yuan Renminbi per share) | (per share) ¥ 0.0001 $ 0.0001 ¥ 0.0001 $ 0.0001
Ordinary shares, shares authorized (in Shares) 450,000,000 450,000,000 450,000,000 450,000,000
Ordinary shares, shares issued (in Shares) 21,140,922 21,140,922 4,268,156 4,268,156
Ordinary shares, shares outstanding (in Shares) 21,140,922 21,140,922 4,268,156 4,268,156
Class B Ordinary Shares        
Ordinary shares, par value (in Dollars per share and Yuan Renminbi per share) | (per share) ¥ 0.0001 $ 0.0001 ¥ 0.0001 $ 0.0001
Ordinary shares, shares authorized (in Shares) 2,042,042 2,042,042 2,042,042 2,042,042
Ordinary shares, shares outstanding (in Shares) 2,042,042 2,042,042 2,042,042 2,042,042