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11. ACCRUED WARRANTY (Tables)
6 Months Ended
Jun. 30, 2018
Accrued Warranty Tables Abstract  
Warranty reserve activity
   

June 30, 2018

(Unaudited)

    December 31, 2017  
Beginning accrued warranty costs   $ 5,000     $ -  
Cost of warranty claims     -       -  
Settlement of warranty claims     (2,875 )     (5,731 )
Provision for product warranty costs     2,875       10,731  
Ending accrued warranty costs   $ 5,000     $ 5,000