A. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details - Doubtful accounts) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Accounting Policies [Abstract] | ||
| Beginning balance | $ 55,039 | $ 65,542 |
| Provision charged to expense | 5,092 | 29,849 |
| Deductions | (52,158) | (40,352) |
| Ending balance | $ 7,973 | $ 55,039 |
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- References No definition available.
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- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase in allowance for credit loss on accounts receivable, from recovery. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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