Quarterly report pursuant to Section 13 or 15(d)

Costs and Estimated Earnings on Uncompleted Contracts (Details 1)

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Costs and Estimated Earnings on Uncompleted Contracts (Details 1) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Costs and estimated earnings amounts on uncompleted contracts included in balance sheets    
Costs and estimated earnings in excess of billings on uncompleted contracts $ 59,224 $ 33,349
Billings in excess of costs and estimated earnings on uncompleted contracts (802,915) (48,478)
Costs and estimated earnings on uncompleted contracts, net $ (743,691) $ (15,129)