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v3.26.1

Borrowings (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
Borrowings |
Schedule of long-term borrowings | ​
​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ | ​ ​ ​ | 2024 | ​ ​ ​ | 2025
Short-term borrowing: |  | ​ |  | ​
Bank loan (i) | ​ | 4,490,000 | ​ | 3,580,000
Other short-term financing arrangements (ii) | ​ | 1,239,561 | ​ | 1,111,910
Current portion of long-term borrowings: | ​ | ​ | ​ | ​
Current portion of long-term bank loan (iii) | ​ | 639,180 | ​ | 331,770
Current portion of other financing arrangements (ii) | ​ | 52,157 | ​ | 317,792
Current portion of convertible notes (iv) | ​ | 2,706,285 | ​ | 6,409
Long-term borrowings: |  | ​ |  | ​
Convertible notes (iv) |  | 8,166,996 |  | 7,997,710
Bank loan (iii) | ​ | 2,965,490 | ​ | 391,220
Other financing arrangements (ii) |  | 308,269 |  | 237,342
Total |  | 20,567,938 |  | 13,974,153
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ ​ ​ | ​ | ​ ​ ​ | ​ | ​ ​ ​ | ​ | ​ ​ ​ | As of December 31, 2024 | ​ ​ ​ | As of December 31, 2025
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Current portion | ​ | Long-term portion | ​ | ​ | ​ | Current portion | ​ | Long-term portion
​ | ​ | Date of | ​ | ​ | ​ | Maturity/ | ​ | Outstanding | ​ | according to | ​ | according to | ​ | Outstanding | ​ | according to | ​ | according to
Ref. | ​ ​ ​ | borrowing | ​ ​ ​ | Lender/Banks | ​ ​ ​ | Repayment date | ​ ​ ​ | loan | ​ ​ ​ | repayment schedule | ​ ​ ​ | repayment schedule | ​ ​ ​ | loan | ​ ​ ​ | repayment schedule | ​ ​ ​ | repayment schedule
1 | ​ | June 15, 2022 |  | Bank of Shanghai | ​ | June 15, 2025 |  | 80,340 |  | 80,340 |  | — |  | — |  | — |  | —
2 | ​ | July 25, 2022 |  | China Construction Bank | ​ | July 25, 2029 |  | 6,460 |  | 1,360 |  | 5,100 |  | 3,060 |  | — |  | 3,060
3 | ​ | July 26, 2022 |  | Industrial and Commercial Bank of China | ​ | July 25, 2029 |  | 9,690 |  | 2,040 |  | 7,650 |  | — |  | — |  | —
4 | ​ | August 24, 2022 |  | China Construction Bank | ​ | July 25, 2029 |  | 18,810 |  | 3,960 |  | 14,850 |  | 8,910 |  | — |  | 8,910
5 | ​ | January 19, 2023 |  | China Construction Bank | ​ | July 25, 2029 |  | 297,730 |  | 62,680 |  | 235,050 |  | 158,030 |  | 17,000 |  | 141,030
6 | ​ | January 20, 2023 |  | Industrial and Commercial Bank of China | ​ | July 25, 2029 |  | 474,810 |  | 99,960 |  | 374,850 |  | 255,000 |  | 30,090 |  | 224,910
7 | ​ | September 18, 2023 |  | Bank of Shanghai | ​ | September 18,2026 |  | 213,040 |  | 108,600 |  | 104,440 |  | 104,440 |  | 104,440 |  | —
8 | ​ | March 18, 2024 | ​ | China Construction Bank | ​ | January 15,2031 | ​ | 637,010 | ​ | 29,900 | ​ | 607,110 | ​ | — | ​ | — | ​ | —
9 | ​ | March 18, 2024 | ​ | Industrial and Commercial Bank of China | ​ | January 15,2031 | ​ | 497,660 | ​ | 23,360 | ​ | 474,300 | ​ | — | ​ | — | ​ | —
10 | ​ | March 18, 2024 | ​ | China Minsheng Bank | ​ | January 15,2031 | ​ | 497,670 | ​ | 23,380 | ​ | 474,290 | ​ | — | ​ | — | ​ | —
11 | ​ | March 18, 2024 | ​ | Agricultural Bank of China | ​ | January 15,2031 | ​ | 497,660 | ​ | 23,360 | ​ | 474,300 | ​ | — | ​ | — | ​ | —
12 | ​ | April 12, 2024 | ​ | Bank of Shanghai | ​ | January 11, 2027 | ​ | 145,550 | ​ | 72,600 | ​ | 72,950 | ​ | 72,950 | ​ | 72,600 | ​ | 350
13 | ​ | May 15, 2024 | ​ | Bank of Shanghai | ​ | February15,2027 | ​ | 228,240 | ​ | 107,640 | ​ | 120,600 | ​ | 120,600 | ​ | 107,640 | ​ | 12,960
​ | ​ | Total |  | ​ | ​ | ​ |  | 3,604,670 |  | 639,180 |  | 2,965,490 |  | 722,990 |  | 331,770 |  | 391,220

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