<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Condensed Consolidated Balance Sheet at March 31, 2000, (Unaudited)
and the Condensed Consolidated Statement of Operations for the three
months ended March 31, 2000, (Unaudited) and is qualified in its
entirety by reference to such financial statements.
</LEGEND>

                              
<PERIOD-TYPE>                    3-MOS
<FISCAL-YEAR-END>                           DEC-31-2000
<PERIOD-START>                              JAN-01-2000
<PERIOD-END>                                MAR-31-2000
<CASH>                                       45,551,211
<SECURITIES>                                          0
<RECEIVABLES>                                54,461,542
<ALLOWANCES>                                  1,568,062
<INVENTORY>                                  78,380,347
<CURRENT-ASSETS>                            184,083,653
<PP&E>                                      122,445,540
<DEPRECIATION>                               61,783,333
<TOTAL-ASSETS>                              257,365,176
<CURRENT-LIABILITIES>                        32,989,346
<BONDS>                                       2,886,200
<PREFERRED-MANDATORY>                                 0
<PREFERRED>                                           0
<COMMON>                                     44,901,418
<OTHER-SE>                                  175,733,364
<TOTAL-LIABILITY-AND-EQUITY>                257,365,176
<SALES>                                      84,615,539
<TOTAL-REVENUES>                             84,615,539
<CGS>                                        50,800,161
<TOTAL-COSTS>                                50,800,161
<OTHER-EXPENSES>                             19,201,449
<LOSS-PROVISION>                                      0
<INTEREST-EXPENSE>                                    0<F1>
<INCOME-PRETAX>                              15,257,804
<INCOME-TAX>                                  6,178,000
<INCOME-CONTINUING>                           9,275,764
<DISCONTINUED>                                        0
<EXTRAORDINARY>                                       0
<CHANGES>                                             0
<NET-INCOME>                                  9,275,764
<EPS-BASIC>                                        0.77
<EPS-DILUTED>                                      0.76
<FN>
<F1>Interest income for the three months ended March 31, 2000,
was $643,875.
</FN>