Annual report pursuant to Section 13 and 15(d)

Concentrations (Tables)

v3.22.1
Concentrations (Tables)
12 Months Ended
Dec. 31, 2021
Risks and Uncertainties [Abstract]  
Schedule of customers
    Years Ended
December 31,
 
Customer   2021     2020  
A (Shanghai Daopei, a related party)    
*
      12 %
B (Hebei Daopei, a related party)     13 %    
*
 
C     28 %     24 %
D     16 %     16 %
E     11 %     12 %