Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2020	Mar. 31, 2020
ASSETS
Cash and cash equivalents	$ 6,402,983	$ 8,065,594	[1]
Marketable securities, short-term	19,179,495	19,084,814	[1]
Accounts receivable, net of allowance for uncollectible accounts of $15,000	2,297,850	2,694,018	[1]
Inventories	3,943,738	3,884,450	[1]
Prepaid expenses and other assets	718,122	655,835	[1]
Total current assets	32,542,188	34,384,711	[1]
Fixed assets
Machinery and equipment	9,280,062	9,280,062	[1]
Leasehold improvements	1,797,245	1,797,245	[1]
Property, Plant and Equipment, Gross, Ending Balance	11,077,307	11,077,307	[1]
Less accumulated depreciation and amortization	10,571,515	10,494,840	[1]
Net fixed assets	505,792	582,467	[1]
Deferred tax assets		108,119	[1]
Marketable securities, long-term	45,049,578	43,606,495	[1]
Right-of-use asset – operating lease	784,774	816,358	[1]
Total assets	78,882,332	79,498,150	[1]
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable	180,338	186,993	[1]
Accrued payroll and other	492,243	482,074	[1]
Income taxes payable	406,326
Operating lease	120,429	127,134	[1]
Total current liabilities	1,199,336	796,201	[1]
Deferred tax liabilities	189,523
Operating lease	675,928	706,600
Total liabilities	2,064,787	1,502,801
Shareholders’ equity
Common stock, $0.01 par value, 6,000,000 shares authorized; 4,835,038 issued and outstanding as of June 30, 2020 and March 31, 2020	48,350	48,350	[1]
Additional paid-in capital	19,386,663	19,383,956	[1]
Accumulated other comprehensive income	1,759,185	516,523	[1]
Retained earnings	55,623,347	58,046,520	[1]
Total shareholders’ equity	76,817,545	77,995,349	[1]
Total liabilities and shareholders’ equity	$ 78,882,332	$ 79,498,150	[1]

[1] The March 31, 2020 Balance Sheet is derived from the audited financial statements contained in our Annual Report on Form 10-K for the fiscal year ended March 31, 2020.