<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
BALANCE SHEET AS OF SEPTEMBER 30, 1998, AND STATEMENTS OF OPERATIONS FOR THE
QUARTER ENDED SEPTEMBER 30, 1998, AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                                 
<PERIOD-TYPE>                             9-MOS
<FISCAL-YEAR-END>                   DEC-31-1998
<PERIOD-START>                      JAN-01-1998
<PERIOD-END>                        SEP-30-1998
<CASH>                                2,631,916
<SECURITIES>                                  0
<RECEIVABLES>                         5,195,259
<ALLOWANCES>                           (72,606)
<INVENTORY>                           4,662,161
<CURRENT-ASSETS>                     13,008,346
<PP&E>                               22,096,836
<DEPRECIATION>                      (9,341,241)
<TOTAL-ASSETS>                       34,838,233
<CURRENT-LIABILITIES>                 2,787,539
<BONDS>                                       0
<COMMON>                                      0
<PREFERRED-MANDATORY>                         0
<PREFERRED>                              82,287
<OTHER-SE>                           25,956,854
<TOTAL-LIABILITY-AND-EQUITY>         34,838,233
<SALES>                              20,310,930
<TOTAL-REVENUES>                     20,310,930
<CGS>                                 9,982,670
<TOTAL-COSTS>                         5,615,478
<OTHER-EXPENSES>                    (1,079,183)
<LOSS-PROVISION>                              0
<INTEREST-EXPENSE>                      242,716
<INCOME-PRETAX>                       5,549,249
<INCOME-TAX>                          1,973,216
<INCOME-CONTINUING>                   3,576,033
<DISCONTINUED>                                0
<EXTRAORDINARY>                               0
<CHANGES>                                     0
<NET-INCOME>                          3,576,033
<EPS-PRIMARY>                              0.43
<EPS-DILUTED>                              0.43