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Intangible Assets, Net (Tables)
12 Months Ended
Dec. 31, 2025
Intangible Assets, Net  
Schedule of intangible assets

Useful life

December 31, 

  ​ ​ ​

  ​ ​ ​

2025

  ​ ​ ​

2024

Intellectual property rights

 

20 years

$

22,800

$

21,718

Patents and trademarks

 

20 years

 

991,930

 

865,682

Total

 

  ​

 

1,014,730

 

887,400

Less: Accumulated amortization

 

  ​

 

(306,981)

 

(270,428)

Total

 

  ​

$

707,749

$

616,972

Schedule of estimated future amortization of intangibles

Year ending December 31, 

  ​ ​ ​

Amount

2026

$

43,417

2027

 

43,417

2028

 

43,417

2029

 

43,417

2030

 

43,417

Thereafter

 

490,664

$

707,749