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INVENTORIES (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Subtotal $ 587,236 $ 906,571
Allowance for inventory obsolescence (99,546) (70,000)
Inventory, net 487,690 836,571
Machinery & Equipment [Member]    
Subtotal 427,551 715,483
Parts [Member]    
Subtotal $ 159,685 $ 191,088