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Income Tax (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Schedule of reconciles U.S. statutory rates to effective tax rate        
U.S. statutory rates (21.00%) 34.00% (21.00%) 34.00%
Tax rate difference - current provision (3.70%) (10.80%) (3.30%) (9.00%)
Other 7.90% (2.50%) 7.80% (1.50%)
Permanent differences 9.50% 0.30% 10.30% 0.10%
Valuation allowance on PRC NOL 1.10% 29.50% 21.00% 18.20%
Valuation allowance on US NOL 1.70% 0.10% 3.50% 0.10%
Tax (benefit) per financial statements (4.50%) 55.70% 18.30% 41.90%