Quarterly report pursuant to Section 13 or 15(d)

Construction Backlog (Details 1)

v3.21.2
Construction Backlog (Details 1)
Jun. 30, 2021
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total Backlog $ 21,035,831
Within 1 year [Member]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total Backlog 8,179,581
1 to 2 years [Member]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total Backlog $ 12,856,250