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Income Taxes (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Income Taxes [Abstract]        
Tax expense at statutory rate US 21.00% 34.00% 21.00% 34.00%
Foreign income not recognized in the U.S. (21.00%) (34.00%) (21.00%) (34.00%)
PRC enterprise income tax rate 25.00% 25.00% 25.00% 25.00%
Changes in valuation allowance and others (25.00%) (25.00%) (25.00%) (25.00%)
Effective income tax rates