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Concentrations of Credit Risk, Customers, and Suppliers (Details Narrative) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Total Net Sales | $ 1,600,000 | $ 38,500,570 | $ 44,198,168 |
Republic of China [Member] |  |  |  |
Concentration of sales risk, percentage |  | 100.00% | 100.00% |
Debt description |  |  |  | The U.S. government imposed tariffs of up to 25% on certain goods imported from China. All of our products are manufactured and imported from China however, only our microphones are currently subject to a 7.5% tariff currently in place.
North America [Member] |  |  |  |
Total Net Sales |  | $ 36,001,200 | $ 40,134,521 |
Accounts Receivable [Member] |  |  |  |
Concentration of sales risk, percentage |  | 10.00% |  |
Accounts Receivable [Member] | Four Customers [Member] | North America [Member] |  |  |  |
Concentration of sales risk, percentage |  | 82.00% |  |
Accounts Receivable [Member] | Two Customers [Member] | North America [Member] |  |  |  |
Concentration of sales risk, percentage |  |  | 62.00% |
Sales Revenue [Member] | Macau Subsidiary [Member] |  |  |  |
Total Net Sales |  | $ 5,100,000 | $ 7,600,000 |
Sales Revenue [Member] | Three Customers [Member] |  |  |  |
Concentration of sales risk, percentage |  | 64.00% | 65.00% |
Sales Revenue [Member] | Customers [Member] |  |  |  |
Concentration of sales risk, percentage |  | 10.00% |  |
Sales Revenue [Member] | Customer One [Member] |  |  |  |
Concentration of sales risk, percentage |  | 41.00% | 13.00% |
Sales Revenue [Member] | Customer Two [Member] |  |  |  |
Concentration of sales risk, percentage |  | 10.00% | 40.00% |
Sales Revenue [Member] | Customer Three [Member] |  |  |  |
Concentration of sales risk, percentage |  | 13.00% | 12.00% |

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