v3.26.1
CONCENTRATION OF RISKS (Details)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Customer Concentration Risk | Customer A | Revenue      
CONCENTRATION OF RISKS      
Concentration risk (as a percent)     14.40%
Customer Concentration Risk | Customer A | Accounts receivable      
CONCENTRATION OF RISKS      
Concentration risk (as a percent)   29.40%  
Customer Concentration Risk | Customer B | Revenue      
CONCENTRATION OF RISKS      
Concentration risk (as a percent) 16.30% 13.10% 11.50%
Customer Concentration Risk | Customer B | Accounts receivable      
CONCENTRATION OF RISKS      
Concentration risk (as a percent) 11.80%    
Customer Concentration Risk | Customer C | Revenue      
CONCENTRATION OF RISKS      
Concentration risk (as a percent)   16.20%  
Customer Concentration Risk | Customer C | Accounts receivable      
CONCENTRATION OF RISKS      
Concentration risk (as a percent) 15.20% 19.30%  
Customer Concentration Risk | Customer D | Revenue      
CONCENTRATION OF RISKS      
Concentration risk (as a percent) 16.60%    
Customer Concentration Risk | Customer D | Accounts receivable      
CONCENTRATION OF RISKS      
Concentration risk (as a percent)   28.90%  
Customer Concentration Risk | Customer E | Revenue      
CONCENTRATION OF RISKS      
Concentration risk (as a percent) 22.80%    
Customer Concentration Risk | Customer E | Accounts receivable      
CONCENTRATION OF RISKS      
Concentration risk (as a percent) 10.10%    
Customer Concentration Risk | Customer F | Accounts receivable      
CONCENTRATION OF RISKS      
Concentration risk (as a percent) 57.40%    
Supplier Concentration Risk | Costs | Supplier A      
CONCENTRATION OF RISKS      
Concentration risk (as a percent) 56.90% 48.00% 54.00%
Supplier Concentration Risk | Accounts payable | Supplier A      
CONCENTRATION OF RISKS      
Concentration risk (as a percent)   100.00%  
Supplier Concentration Risk | Accounts payable | Supplier B      
CONCENTRATION OF RISKS      
Concentration risk (as a percent) 100.00%