<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED>

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                           4,771                 208,526                 226,320
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                               20,775,228              22,366,889              18,831,421
<ALLOWANCES>                                   430,000                 430,000                 430,000
<INVENTORY>                                 24,994,264              22,289,972              23,951,731
<CURRENT-ASSETS>                            46,762,334              45,923,798              44,080,243
<PP&E>                                      41,593,701              42,431,671              43,574,615
<DEPRECIATION>                              14,836,541              15,399,305              15,881,755
<TOTAL-ASSETS>                              76,426,871              75,810,808              74,575,014
<CURRENT-LIABILITIES>                       18,301,853              17,687,004              18,455,920
<BONDS>                                     19,696,682              16,344,766              12,639,401
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                       942,454                 990,135               1,039,642
<OTHER-SE>                                           0                       0                       0
<TOTAL-LIABILITY-AND-EQUITY>                76,426,871              75,810,808              74,575,014
<SALES>                                     44,173,303             100,449,206             146,140,460
<TOTAL-REVENUES>                            44,173,303             100,449,206             146,140,460
<CGS>                                       37,036,681              82,916,179             121,564,238
<TOTAL-COSTS>                               37,036,681              82,916,179             121,564,238
<OTHER-EXPENSES>                             3,949,378               8,419,166              12,328,511
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                             349,845                 763,225               1,062,419
<INCOME-PRETAX>                              2,837,399               8,350,636              11,185,292
<INCOME-TAX>                                 1,152,000               3,334,000               4,468,000
<INCOME-CONTINUING>                          1,685,399               5,016,636               6,717,292
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                 1,685,399               5,016,636               6,717,292
<EPS-PRIMARY>                                     0.16                    0.49                    0.65
<EPS-DILUTED>                                     0.16                    0.48                    0.64


</TABLE>