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Contract Assets and Contract Liabilities (Details 1) - USD ($)
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Costs and estimated earnings amounts on uncompleted contracts included in balance sheets      
Contract assets $ 10,745 $ 36,384 $ 41,916
Contract liabilities (1,366,998) (437,271) (1,437,579)
Net contract liabilities $ (1,356,253) $ (400,887) $ (1,395,663)