
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                       4,659,421
<SECURITIES>                                         0
<RECEIVABLES>                                6,555,828
<ALLOWANCES>                                   280,000
<INVENTORY>                                  4,821,500
<CURRENT-ASSETS>                            16,273,135
<PP&E>                                      18,845,370
<DEPRECIATION>                              13,002,568
<TOTAL-ASSETS>                              23,369,789
<CURRENT-LIABILITIES>                        4,107,122
<BONDS>                                      8,079,355
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       241,740
<OTHER-SE>                                  10,761,257
<TOTAL-LIABILITY-AND-EQUITY>                23,369,789
<SALES>                                      4,243,187
<TOTAL-REVENUES>                             4,243,187
<CGS>                                        3,516,906
<TOTAL-COSTS>                                4,462,523
<OTHER-EXPENSES>                                 1,182
<LOSS-PROVISION>                                 4,904
<INTEREST-EXPENSE>                             165,414
<INCOME-PRETAX>                            (3,907,742)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (3,907,742)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (3,907,742)
<EPS-PRIMARY>                                   (0.17)
<EPS-DILUTED>                                   (0.17)
        

</TABLE>
