v3.26.1
Share-based compensation expenses (Tables)
12 Months Ended
Dec. 31, 2025
Share-based compensation expenses  
Schedule of activities of the service-based share options granted

  ​ ​ ​

Options

  ​ ​ ​

Weighted Average

  ​ ​ ​

Weighted Average Remaining

  ​ ​ ​

Average

  ​ ​ ​

Outstanding

  ​ ​ ​

Exercise Price US$

  ​ ​ ​

Contractual Life (In years)

  ​ ​ ​

Intrinsic Value

Outstanding as of December 31, 2024

 

25,895

1.00

0.22

Granted

Exercised

(7,500)

Forfeited

(12,090)

1.00

Outstanding as of December 31, 2025

6,305

0.00

Vested and exercisable as of December 31, 2025

 

6,305

0.00

Employee Stock Option  
Share-based compensation expenses  
Schedule of activities of the service-based share options granted

  ​ ​ ​

Weighted Average

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

Weighted Average

Remaining

  ​ ​ ​

Average

  ​ ​ ​

Options

  ​ ​ ​

Exercise 

  ​ ​ ​

Contractual

  ​ ​ ​

Intrinsic

  ​ ​ ​

Outstanding

Price US$

Life (In years)

Value

Outstanding as of December 31, 2024

 

1,961,750

0.3015

4.95

5

Exercised

Forfeited

Outstanding as of December 31, 2025

 

1,961,750

0.3015

3.95

5

Vested and exercisable as December 31, 2025

 

1,961,750

0.3015

3.95

5

Employee Stock Option Awards Of Ziitech Pty Ltd  
Share-based compensation expenses  
Schedule of activities of the service-based share options granted

  ​

Weighted Average

Number

Grant Date

  ​ ​ ​

Outstanding

  ​ ​ ​

Fair Value (US$)

Unvested as of December 31, 2024

 

 

Acquisition of Ziitech

 

54,157

 

2.19

Vested

 

 

Forfeited

 

 

Unvested as of December 31, 2025

 

54,157

 

2.19