BALANCE SHEETS (December 31, 2023 Unaudited) - USD ($)	Dec. 31, 2023	Mar. 31, 2023
Current assets
Cash and cash equivalents	$ 4,684,910	$ 1,669,896
Marketable securities, short-term (amortized cost of $14,556,450 as of December 31, 2023, and $15,696,135 as of March 31, 2023)	14,335,619	15,513,095
Accounts receivable, net of allowance for credit losses of $15,000	2,245,728	6,523,344
Inventories	7,349,811	6,417,010
Prepaid expenses and other assets	597,305	663,459
Total current assets	29,213,373	30,786,804
Fixed assets
Machinery and equipment	10,501,096	10,484,365
Leasehold improvements	1,956,309	1,956,309
Less accumulated depreciation and amortization	11,326,985	11,095,236
Net fixed assets	1,130,420	1,345,438
Deferred tax assets	1,290,284	572,038
Marketable securities, long-term (amortized cost of $36,414,391 as of December 31, 2023, and $37,495,846 as of March 31, 2023)	35,670,914	36,125,047
Right-of-use asset - operating lease	324,451	425,843
Total assets	67,629,442	69,255,170
Current liabilities
Accounts payable	170,701	281,712
Accrued payroll and other	460,414	1,375,250
Operating lease	178,490	175,798
Total current liabilities	809,605	1,832,760
Operating lease	218,785	342,908
Total liabilities	1,028,390	2,175,668
Shareholders' equity
Common Stock, Value	48,334	48,308
Additional paid-in capital	19,542,335	19,295,442
Accumulated other comprehensive loss	(753,317)	(1,213,858)
Retained earnings	47,763,700	48,949,610
Total shareholders' equity	66,601,052	67,079,502
Total liabilities and shareholders' equity	$ 67,629,442	$ 69,255,170