Quarterly report pursuant to Section 13 or 15(d)

Liquidity (Details)

v3.21.1
Liquidity (Details)
Mar. 31, 2021
USD ($)
Liquidity [Line Items]  
Total Backlog $ 22,871,480
Within 1 year [Member]  
Liquidity [Line Items]  
Total Backlog 10,015,230
1 to 2 years [Member]  
Liquidity [Line Items]  
Total Backlog $ 12,856,250