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Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2019
Property, Plant and Equipment [Abstract]  
Schedule of property and equipment
  

June 30,

2019

(Unaudited) 

  

December 31,

2018

 
Production tooling, jigs, fixtures  $70,749   $70,749 
Shop equipment and machinery   2,971,381    2,808,928 
Vehicles   188,597    188,597 
Leasehold improvements   380,544    276,901 
Office equipment   159,269    134,995 
Software   102,690    102,690 
Total property and equipment, cost   3,873,230    3,582,860 
Less: accumulated depreciation and amortization   (1,755,324)   (1,460,103)
Property and equipment, net  $2,117,906   $2,122,757