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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
May 31, 2022 | May 31, 2021 | Oct. 31, 2021 | May 31, 2020
Cash and cash equivalents | $ 31,500,000 |  |  |
Allowance for doubtful accounts | 0 | $ 0 |  |
Provision for inventory reserves | 1,031,000 | $ 176,000 |  | $ 1,669,000
Shelf registration |  |  | $ 75,000,000 |
Rasied capital | $ 25,000,000 |  |  |
Accounts Receivable | Customer One |  |  |  |
Concentration risk | 68.00% | 51.00% |  |
Accounts Receivable | Customer Two |  |  |  |
Concentration risk | 18.00% | 24.00% |  |
Accounts Receivable | Customer Three |  |  |  |
Concentration risk | 11.00% | 19.00% |  |
Net Sales | Customer One |  |  |  |
Concentration risk | 82.00% | 24.00% |  |
Net Sales | Customer Two |  |  |  |
Concentration risk |  | 23.00% |  |
Net Sales | Customer Three |  |  |  |
Concentration risk |  | 20.00% |  |
Net Sales | Customer Four |  |  |  |
Concentration risk |  | 10.00% |  |
Europe | Accounts Receivable |  |  |  |
Concentration risk | 0.00% | 0.00% |  |
North America | Accounts Receivable |  |  |  |
Concentration risk | 20.00% | 2.00% |  |
Asia | Accounts Receivable |  |  |  |
Concentration risk | 80.00% | 98.00% |  |

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