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15. ACCRUED WARRANTY (Tables)
9 Months Ended
Sep. 30, 2020
Less: Accumulated Amortization  
Warranty Reserve Activity
   

September 30,

2020

(Unaudited)

   

December 31,

2019

 
Beginning accrued warranty costs   $ 30,000     $ 30,000  
Provision for warranty expense     79,545       2,609  
Settlement of warranty claims     (4,545 )     (2,609 )
Ending accrued warranty costs   $ 105,000     $ 30,000