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Schedule of Customer Concentrations and Foreign Sales (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2021 | Nov. 30, 2020
Total sales | $ 2,001,000 | $ 3,431,000 | $ 6,225,000 | $ 8,365,000
Asia Pacific [Member] |  |  |  |
Total sales | 834,000 | 1,901,000 | 2,367,000 | 4,754,000
EMEA [Member] |  |  |  |
Total sales | 731,000 | 1,287,000 | 2,557,000 | 2,723,000
Latin America [Member] |  |  |  |
Total sales | $ 436,000 | $ 243,000 | $ 1,301,000 | $ 888,000

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