v3.26.1
Summary of Significant Accounting Policies - Additional Information (Details)
12 Months Ended
Dec. 31, 2025
USD ($)
Segment
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Sep. 30, 2024
USD ($)
Jan. 01, 2023
USD ($)
Dec. 31, 2022
USD ($)
Accounting Policies [Line Items]            
Restricted cash $ 2,522,898          
Stockholder's equity (deficit) $ 17,866,355 $ 29,508,884 $ (30,036,695)     $ (28,046,016)
Intangible assets, estimated useful life 3 years          
Amortization expenses $ 0 26,981 29,597      
Loss on modification of operating lease (11,890)          
Contract assets 0 0        
Advertising expense 795,670 1,023,352 797,823      
Government grants recognized 120,721 38,167 428,066      
Employee social benefits $ 2,000,000 2,180,000 $ 1,600,000      
Required percentage of statutory surplus fund 10.00%          
Appropriation not required percentage of statutory surplus fund 50.00%          
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description The CODM reviews financial information presented on a consolidated basis for purposes of making operating decisions, allocating resources, and evaluating financial performance. As such, the Group has determined that it operates as one operating segment. The Group has concluded that consolidated net loss is the measure of segment profitability. The CODM assesses performance for the Group, monitors budget versus actual results, and determines how to allocate resources based on consolidated net loss as reported in the consolidated statements of comprehensive loss.          
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] srt:ChiefExecutiveOfficerMember          
Number of operating segments | Segment 1          
Aggregate redemption amount for all redeemable preference shares       $ 39,000,000    
Net proceeds from IPO and partial exercise of over-allotment option, after commissions and offering expenses $ 19,100,000          
Cash and cash equivalents 11,385,381 $ 26,773,902        
Working capital $ 13,600,000          
Minimum            
Accounting Policies [Line Items]            
Standard warranty period 1 year          
Contractual service period 1 year          
Revenue from optional maintenance service period 1 day          
Maximum            
Accounting Policies [Line Items]            
Standard warranty period 3 years          
Contractual service period 2 years          
Revenue from optional maintenance service period 2 days          
Sales | German Subsidiary            
Accounting Policies [Line Items]            
Percentage of VAT 19.00%          
Sales | PRC Subsidiaries            
Accounting Policies [Line Items]            
Percentage of VAT 13.00%          
Services | PRC Subsidiaries            
Accounting Policies [Line Items]            
Percentage of VAT 6.00%          
Cumulative Effect, Period of Adoption, Adjustment            
Accounting Policies [Line Items]            
Stockholder's equity (deficit)         $ (29,923) $ (29,923)