v3.26.1
Summary of Significant Accounting Policies - Additional Information (Detail)
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 01, 2025
CNY (¥)
Dec. 01, 2025
USD ($)
Convenience translation rate per US$1.00 6.9931       6.9931    
Advertising expenditures ¥ 3,385,000 $ 484,000 ¥ 3,645,000 ¥ 2,918,000      
Multi-employer defined contribution plan expenses 23,989,000 3,430,000 15,751,000 13,298,000      
Shipping and handling costs 160,827,000 22,998,000 176,206,000 42,115,000      
Inventory write down 1,482,000 212,000 921,000 460,000      
Gain (loss) on disposal of property plant equipment (34,000) (5,000) (682,000) (138,000)      
Indefinite lived intangible assets     0     ¥ 0  
Appropriation of reserves 1,530,000 $ 219,000 533,000 48,000      
Dividends 0   0 0      
Right of use asset ¥ 1,363,000   60,590,000 9,127,000     $ 195,000
Short Term Lease Term 12 months 12 months          
Weighted average remaining lease terms of the right of use asset 12 years       12 years    
Weighted average incremental borrowing rate 4.20%       4.20%    
Operating lease cost ¥ 15,642,000 $ 2,237,000 11,227,000 11,527,000      
Short term lease cost 118,000 17,000 100,000 172,000      
Cash paid for operating leases 11,024,000 1,576,000 7,383,000 6,877,000      
Other operating income (expense), net 10,400,000 1,487,000 29,869,000 6,233,000      
Other Operating Income 1,983,000 284,000          
Foreign Exchange Forward [Member]              
Derivative, Notional Amount 30,000,000   31,215,000   $ 4,290,000    
Unrealized Gain (Loss) on Derivatives ¥ 314,000 $ 45,000 8,000        
General Reserve Fund [Member]              
Percentage of reserve appropriation net of tax 10.00% 10.00%          
Percentage of registered capital 50.00% 50.00%          
Statutory Surplus Reserve Fund [Member]              
Percentage of reserve appropriation net of tax 10.00% 10.00%          
Percentage of registered capital 50.00% 50.00%          
Third Party [Member]              
Proceeds from Short-Term Debt ¥ 90,000,000            
Cost of Sales [Member]              
Inventory write down 1,482,000 $ 212,000 921,000 460,000      
Other Expense [Member]              
Gain (loss) on disposal of property plant equipment 34,000 5 682,000 138,000      
General and administrative expenses [Member]              
Allowance for credit loss on accounts receivable contract with customer assets loan receivables and other receivables incurred during the period 7,938,000 1,135,000 12,790,000 13,691,000      
Shipping and Handling [Member]              
Shipping and handling costs ¥ 1,208,000 $ 173,000 ¥ 2,438,000 ¥ 1,427,000