XML 55 R39.htm IDEA: XBRL DOCUMENT v3.8.0.1
Taxes (Details 1)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Taxes [Abstract]    
China income tax rate 25.00% 25.00%
IPO costs 7.70% 0.00%
PRC - non-deductible expense (1.70%) 0.00%
Cayman - non-deductible expense (9.60%) 0.00%
Effective tax rate 21.40% 25.00%