<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEETS AT JUNE 30, 1999 AND 1998 (UNAUDITED) AND
THE CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND CASH FLOWS FOR THE SIX
MONTHS ENDED JUNE 30, 1999 AND 1998 (UNAUDITED) AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                       7,778,572
<SECURITIES>                                         0
<RECEIVABLES>                                8,580,665
<ALLOWANCES>                                   171,424
<INVENTORY>                                  3,519,104
<CURRENT-ASSETS>                            21,079,778
<PP&E>                                      16,754,529
<DEPRECIATION>                               8,917,953
<TOTAL-ASSETS>                              45,374,754
<CURRENT-LIABILITIES>                        7,299,209
<BONDS>                                              0
<PREFERRED-MANDATORY>                           35,494
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                  37,005,337
<TOTAL-LIABILITY-AND-EQUITY>                45,374,754
<SALES>                                     35,245,232
<TOTAL-REVENUES>                            35,245,232
<CGS>                                       20,241,797
<TOTAL-COSTS>                               10,479,223
<OTHER-EXPENSES>                                23,972
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                           (119,985)
<INCOME-PRETAX>                              4,620,225
<INCOME-TAX>                                 1,857,331
<INCOME-CONTINUING>                          2,762,894
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 2,762,894
<EPS-BASIC>                                      .78
<EPS-DILUTED>                                      .78