Annual report pursuant to Section 13 and 15(d)

A. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

v3.20.1
A. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)
12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]  
Schedule of allowance for doubtful accounts

The allowance for doubtful accounts for the years ended December 31 are as follows:

 

    2019     2018  
Beginning balance   $ 65,542     $ 22,173  
Provision charged to expense     29,849       55,152  
Deductions     (40,352 )     (11,783 )
Ending balance   $ 55,039     $ 65,542  
Schedule of product warranties

Product warranties for the years ended December 31 is as follows:

 

    2019     2018  
Beginning balance   $ 46,103     $ 59,892  
Warranty claims incurred     (66,803 )     (28,000 )
Provision charged to expense     79,491       14,211  
Ending balance   $ 58,791     $ 46,103