<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> MAY-31-2000
<PERIOD-END> AUG-31-2000
<CASH> 219,300
<SECURITIES> 0
<RECEIVABLES> 1,812,900
<ALLOWANCES> 250,000
<INVENTORY> 1,023,900
<CURRENT-ASSETS> 2,838,500
<PP&E> 2,753,300
<DEPRECIATION> 1,867,300
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<CURRENT-LIABILITIES> 1,551,900
<BONDS> 9,305,100
1,811,500
0
<COMMON> 0
<OTHER-SE> (9,109,800)
<TOTAL-LIABILITY-AND-EQUITY> 3,818,100
<SALES> 2,266,600
<TOTAL-REVENUES> 2,266,600
<CGS> 1,919,800
<TOTAL-COSTS> 1,919,800
<OTHER-EXPENSES> 429,000
<LOSS-PROVISION> 0
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<INCOME-PRETAX> (132,000)
<INCOME-TAX> 0
<INCOME-CONTINUING> (132,000)
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<NET-INCOME> (132,000)
<EPS-BASIC> (0.02)
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</TABLE>