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5. INVENTORY (Details Narrative) - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Inventory Disclosure Abstract |  |  |
Inventory write-down | $ 87,000 | $ 48,000 | $ 168,000

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- Definition Nonrecurring impairment charges related to the write-off of production-related equipment and inventory. This tag is used when an Entity charges this cost to cost of goods sold. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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