BALANCE SHEETS (December 31, 2022 Unaudited) - USD ($)	Jun. 30, 2023	Mar. 31, 2023
Current assets
Cash and cash equivalents	$ 1,439,933	$ 1,669,896
Marketable securities, short-term (amortized cost of $12,300,315 as of June 30, 2023, and $15,696,135 as of March 31, 2023)	12,173,737	15,513,095
Accounts receivable, net of allowance for credit losses of $227,440 as of June 30, 2023, and $15,000 as of March 31, 2023	5,397,032	6,523,344
Inventories	6,292,162	6,417,010
Prepaid expenses and other assets	707,175	663,459
Total current assets	26,010,039	30,786,804
Fixed assets
Machinery and equipment	10,488,496	10,484,365
Leasehold improvements	1,956,309	1,956,309
Less accumulated depreciation and amortization	11,172,258	11,095,236
Net fixed assets	1,272,547	1,345,438
Deferred tax assets	724,773	572,038
Marketable securities, long-term (amortized cost of $41,447,065 as of June 30, 2023, and $37,495,846 as of March 31, 2023)	39,719,369	36,125,047
Right-of-use asset - operating lease	392,370	425,843
Total assets	68,119,098	69,255,170
Current liabilities
Accounts payable	159,155	281,712
Accrued payroll and other	935,621	1,375,250
Operating lease	176,688	175,798
Total current liabilities	1,271,464	1,832,760
Operating lease	301,866	342,908
Total liabilities	1,573,330	2,175,668
Shareholders' equity
Common Stock, Value	48,334	48,308
Additional paid-in capital	19,423,479	19,295,442
Accumulated other comprehensive loss	(1,448,559)	(1,213,858)
Retained earnings	48,522,514	48,949,610
Total shareholders' equity	66,545,768	67,079,502
Total liabilities and shareholders' equity	$ 68,119,098	$ 69,255,170