<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
This schedule contains a summary of financial information extracted from the
condensed Consolidated Balance Sheet and Condensed Consolidated Statement of
Operations and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> JUN-30-2000
<PERIOD-END> JUN-30-2000
<CASH> 11,949,858
<SECURITIES> 0
<RECEIVABLES> 19,571,016
<ALLOWANCES> 404,000
<INVENTORY> 21,148,660
<CURRENT-ASSETS> 56,126,268
<PP&E> 82,342,030
<DEPRECIATION> 28,114,968
<TOTAL-ASSETS> 115,340,638
<CURRENT-LIABILITIES> 17,374,329
<BONDS> 0
0
0
<COMMON> 648,588
<OTHER-SE> 0
<TOTAL-LIABILITY-AND-EQUITY> 115,340,638
<SALES> 99,952,142
<TOTAL-REVENUES> 101,838,744
<CGS> 76,613,787
<TOTAL-COSTS> 90,710,491
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 891,805
<INCOME-PRETAX> 10,473,260
<INCOME-TAX> 2,906,219
<INCOME-CONTINUING> 6,335,336
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 6,335,336
<EPS-BASIC> 1.31
<EPS-DILUTED> 1.28
</TABLE>