Quarterly report pursuant to Section 13 or 15(d)

Contract Assets and Contract Liabilities (Details)

v3.20.2
Contract Assets and Contract Liabilities (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Costs and estimated earnings on uncompleted contracts    
Costs incurred on uncompleted contracts $ 622,745 $ 513,558
Estimated earnings to date on uncompleted contracts 178,553 127,032
Gross contract assets 801,298 640,590
Less: billings to date (938,319) (703,532)
Net contract liabilities $ (137,021) $ (62,942)