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Trade and other receivables (Tables)
 12 Months Ended
Dec. 31, 2022
Text block [abstract]  
Summary of Trade and Other Receivables
    
31.12.2021
RMB’000
     
31.12.2022
RMB’000
     
31.12.2022
US$’000
  
Trade receivables, gross
      364,445        1,549,462        222,883  
Less: Allowance for expected credit losses
      (33,210 )       (33,247 )       (4,782 ) 
    
 
 
     
 
 
     
 
 
  
Net trade receivables (Note 6.2)
      331,235        1,516,215        218,101  
Bills receivable
(i)
      6,437,100        4,970,880        715,039  
    
 
 
     
 
 
     
 
 
  
Total (Note 35, Note 36)
      6,768,335        6,487,095        933,140  
    
 
 
     
 
 
     
 
 
  
Amounts receivable:
                           
- associates and joint ventures (trade)
      243        125,489        18,051  
- associates and joint ventures
(non-trade)
      11,959        11,230        1,615  
- related parties (trade)
      68,539        180,374        25,946  
- related parties
(non-trade)
      459        3,476        500  
Bills receivable in transit
      22,360        8,172        1,176  
Grant receivables
      —        62,000        8,919  
Interest receivables
      11,788        15,437        2,221  
Others
      29,663        34,326        4,937  
Less: Impairment losses – other receivables
      (6,231 )       (5,754 )       (828 ) 
    
 
 
     
 
 
     
 
 
  
Other receivables carried at amortized cost (Note 35)
      138,780        434,750        62,537  
Tax recoverable
      328,369        290,596        41,801  
Advances paid to suppliers
      66,474        81,861        11,775  
Right of return assets
      40,761        17,045        2,452  
    
 
 
     
 
 
     
 
 
  
Net other receivables
      574,384        824,252        118,565  
    
 
 
     
 
 
     
 
 
  
Total trade and other receivables
      7,342,719        7,311,347        1,051,705  
    
 
 
     
 
 
     
 
 
  
Note:

 
(i)
 
As of December 31, 2022, bills receivable includes bills received from joint ventures and related parties amounted to RMB 0.1 million (US$ less than 0.1 million) (2021: RMB 0.7 million) and RMB 763.4 million (US$ 109.8 million) (2021: RMB 523.5 million) respectively.
As of December 31, 2022, bills receivable amounted to RMB 12.6 million (US$ 1.8 million) (2021: RMB 13.4 million) was pledged to secure bank facilities.
Movement in the Allowance for Expected Credit Losses of Trade and Other Receivables
Movement in the allowance for expected credit losses of trade and other receivables is as follows:
 
    
31.12.2021
RMB’000
     
31.12.2022
RMB’000
     
31.12.2022
US$’000
  
At January 1
      50,260        39,441        5,674  
Credit to consolidated statement of profit or loss (under “Selling, general and administrative expenses”)
      (8,525 )       (459 )       (66 ) 
Written off
      (2,278 )       (5 )       (1 ) 
Translation difference
      (16 )       24        3  
    
 
 
     
 
 
     
 
 
  
At December 31
      39,441        39,001        5,610