Quarterly report pursuant to Section 13 or 15(d)

Concentrations (Details Textual)

v3.19.2
Concentrations (Details Textual)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
USD ($)
Supplier / Integer
Jun. 30, 2019
USD ($)
Customer / Integer
Supplier / Integer
Dec. 31, 2018
USD ($)
Customer / Integer
Supplier / Integer
Concentrations (Textual)      
Concentration risk, percentage 10.00% 10.00%  
Number of supplier 4 4  
10% or more of purchase [Member]      
Concentrations (Textual)      
Concentration risk, percentage 10.00% 10.00%  
Number of supplier 3 3  
10% or more of purchase [Member] | Outstanding accounts payable [Member]      
Concentrations (Textual)      
Concentration risk, percentage   75.30% 95.50%
Number of supplier   4 4
More than 10% Revenues [Member] | Outstanding accounts and tenants receivable [Member]      
Concentrations (Textual)      
Concentration risk, percentage   83.50% 56.00%
Number of customer | Customer / Integer   4 2
PRC [Member]      
Concentrations (Textual)      
Uninsured cash balances | $ $ 640,253 $ 640,253 $ 1,216,485
Cash balances in excess of FDI | $ $ 2,761,051 $ 2,761,051 $ 239,000