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Income Tax (Details 1) - Prc [Member]
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Summary of reconciliation of PRC statutory rates to the company's effective tax rate        
PRC statutory rate 25.00% 25.00% 25.00% 25.00%
Net operating losses for which no deferred tax assets was recognized 24.50% 9.10% 46.70% 13.20%
Other (4.40%) (2.00%) (8.30%)  
Effective income tax rate 45.10% 32.10% 63.40% 38.20%