XML 83 R70.htm IDEA: XBRL DOCUMENT v3.25.2
9. COMMITMENTS AND CONTINGENCIES - Product warranties (Details) - USD ($)
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
COMMITMENTS AND CONTINGENCIES      
Royalty expense $ 0 $ 36,000 $ 39,000
Product warranties      
Warranty period 3 years