Annual report pursuant to Section 13 and 15(d)

Concentrations (Tables)

v3.20.1
Concentrations (Tables)
12 Months Ended
Dec. 31, 2019
Risks and Uncertainties [Abstract]  
Schedule of customers
    Years Ended December 31,  
Customer   2019     2018  
A (Beijing Daopei, a related party)     *       17 %
B (Hebei Daopei, a related party)     19 %     *  
C     26 %     21 %
D     14 %     14 %
E     11 %     11 %