Annual report pursuant to Section 13 and 15(d)

UNCOMPLETED CONTRACTS (Details)

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UNCOMPLETED CONTRACTS (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Revenue Recognized $ 8,216,900 $ 8,428,000
Costs and estimated earnings in excess of billings on uncompleted contracts 314,300  
Revenue recognized (242,900)  
Billings in excess of costs and estimated earnings on uncompleted contracts 470,200 227,300
Uncompleted Contracts [Member]    
Revenue Recognized 499,600  
Less: Billings to date (185,300)  
Costs and estimated earnings in excess of billings on uncompleted contracts 314,300  
Billings to date 1,642,600 2,875,500
Revenue recognized (1,172,400) (2,648,200)
Billings in excess of costs and estimated earnings on uncompleted contracts $ 470,200 $ 227,300