<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEETS AT MARCH 31, 1999 AND 1998 (UNAUDITED) AND
THE CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND CASH FLOWS FOR THE THREE
MONTHS ENDED MARCH 31, 1999 AND 1998 (UNAUDITED) AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                       7,458,318
<SECURITIES>                                         0
<RECEIVABLES>                                8,206,940
<ALLOWANCES>                                   187,665
<INVENTORY>                                  3,453,574
<CURRENT-ASSETS>                            20,355,159
<PP&E>                                      16,478,583
<DEPRECIATION>                               8,682,705
<TOTAL-ASSETS>                              43,449,113
<CURRENT-LIABILITIES>                        6,881,542
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        35,320
<OTHER-SE>                                  35,230,464
<TOTAL-LIABILITY-AND-EQUITY>                43,449,113
<SALES>                                     17,011,872
<TOTAL-REVENUES>                            17,011,872
<CGS>                                        9,814,003
<TOTAL-COSTS>                                5,196,656
<OTHER-EXPENSES>                                 2,736
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                            (69,157)
<INCOME-PRETAX>                              2,067,634
<INCOME-TAX>                                   858,068
<INCOME-CONTINUING>                          1,209,566
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 1,209,566
<EPS-PRIMARY>                                      .34
<EPS-DILUTED>                                      .34