Annual report pursuant to Section 13 and 15(d)

Revenue Recognition (Details 1)

v3.21.1
Revenue Recognition (Details 1) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Increase (decrease) $ 2,650,739 $ 1,987,747
Customer Deposit Liability [Member]    
Opening balance 2,503,785 516,038
Closing balance 5,154,524 2,503,785
Increase (decrease) 2,650,739 1,987,747
Receivables [Member]    
Opening balance 4,455,209 862,397
Closing balance 7,712,396 4,455,209
Increase (decrease) $ 3,257,187 $ 3,592,812