Industry fair showcases advanced, green tech

        

      

      

        
          
          chinadaily.com.cn |
          Updated: 2018-09-21 11:44
          
          
          
          
        


        
      

      

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   Facial recognition systems can detect stress levels from a person's facial expression, calling people's attention to mental health. [Photo/IC] 
 
 

 

        


        
        
      

        
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