<TABLE> <S> <C>


<ARTICLE> 5

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   6-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996             DEC-31-1997
<PERIOD-END>                               SEP-30-1997             JUN-30-1997             MAR-31-1997
<CASH>                                          31,575                  31,334                  30,638
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                               12,459,009              10,645,942               9,781,907
<ALLOWANCES>                                 (869,000)                (973,000)               (819,000)
<INVENTORY>                                  2,042,604               2,397,513               1,875,590
<CURRENT-ASSETS>                            14,715,718              13,468,198              12,405,382
<PP&E>                                      15,802,868              15,563,605              14,898,656
<DEPRECIATION>                              (6,949,321)             (6,479,351)             (6,047,412)
<TOTAL-ASSETS>                              24,773,854              23,758,235              22,617,272
<CURRENT-LIABILITIES>                        7,653,450               6,819,280               6,723,958
<BONDS>                                      5,645,685               6,242,760               5,441,645
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                        54,298                  53,785                  53,786
<OTHER-SE>                                  10,432,421               9,654,410               9,409,884
<TOTAL-LIABILITY-AND-EQUITY>                24,773,854              23,758,235              22,617,272
<SALES>                                     35,496,626              22,262,868              11,197,838
<TOTAL-REVENUES>                            35,496,626              22,262,868              11,197,838
<CGS>                                       26,198,875              16,589,463               8,214,806
<TOTAL-COSTS>                               26,198,875              16,589,463               8,214,806
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                               264,816                 166,481                  84,141
<INTEREST-EXPENSE>                             474,169                 299,628                 149,367
<INCOME-PRETAX>                              2,578,798               1,247,839                 840,506
<INCOME-TAX>                                 1,031,520                 499,010                 336,203
<INCOME-CONTINUING>                          1,547,278                 748,829                 504,303
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                 1,547,278                 748,829                 504,303
<EPS-PRIMARY>                                     0.29                    0.14                    0.09
<EPS-DILUTED>                                     0.29                    0.14                    0.09




</TABLE>