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Earnings per share (Tables)
12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Summary of Earnings Per Share
The calculation of basic earnings per share is based on:
 
 
  
31.12.2017
 
  
31.12.2018
 
  
31.12.2019
 
  
31.12.2019
 
 
  
RMB’000
 
  
RMB’000
 
  
RMB’000
 
  
US$’000
 
Profit attributable to ordinary equity holders of the parent
  
 
888,809
 
  
 
695,266
 
  
 
604,914
 
  
 
85,378
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Weighted average number of ordinary shares
  
 
40,764,569
 
  
 
40,858,290
 
  
 
40,858,290
 
  
 
40,858,290
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Diluted earnings per share
The weighted average number of ordinary shares adjusted for the effect of unissued ordinary shares under the Share Option Scheme is determined as follows:
 
 
  
31.12.2017
 
  
31.12.2018
 
  
31.12.2019
 
Weighted average number of shares issued, used in the calculation of basic earnings per share
  
 
40,764,569
 
  
 
40,858,290
 
  
 
40,858,290
 
Diluted effect of share options
  
 
—  
 
  
 
—  
 
  
 
—  
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Weighted average number of ordinary shares adjusted for effect of dilution
  
 
40,764,569
 
  
 
40,858,290
 
  
 
40,858,290