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14. ACCRUED WARRANTY (Tables)
12 Months Ended
Dec. 31, 2019
Accrued Warranty  
Warranty reserve activity
 

 

December 31,

2019

 

 

December 31,

2018

 

Beginning accrued warranty costs  $30,000   $5,000 
Provision for warranty expense   2,609    47,454 
Settlement of warranty claims   (2,609)   (22,454)
Ending accrued warranty costs  $30,000   $30,000