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Note 6 - Due From Related Parties, Net (Tables)
 6 Months Ended
Jun. 30, 2020
Due From Related Parties [Member]  
Notes Tables  
Schedule of Related Party Transactions [Table Text Block]
    June 30,
2020		   December 31,
2019
     
US$('000)
      
US$('000)
  
     
(Unaudited)
          
                 
Zhongwang Xiyue Technology (Beijing) Co., Ltd. (“Zhongwang Xiyue”)    
52
      
81
  
Guohua Shiji (Beijing) Communication Co., Ltd. (“Guohua Shiji”)    
170
      
172
  
     
222
      
253
  
Allowance for doubtful accounts    
(170
 )    
(172
 )
Due from related parties, net    
52
      
81