INVENTORIES - Additional Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
| Cost of Sales | $ 70,047 | $ 83,207 | $ 132,602 | $ 419,292 |
| Warranty expenses | 0 | 26,912 | ||
| Inventory Cost [Member] | ||||
| Cost of Sales | $ 68,385 | $ 76,843 | 208,284 | $ 376,639 |
| Warranty expenses | $ 81,224 | |||
| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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