<ARTICLE> 5 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-END> JUN-30-1998 <CASH> 18,001,738 <SECURITIES> 0 <RECEIVABLES> 45,968,202 <ALLOWANCES> 3,257,000 <INVENTORY> 7,645,122 <CURRENT-ASSETS> 71,035,401 <PP&E> 20,027,436 <DEPRECIATION> 14,330,578 <TOTAL-ASSETS> 90,759,874 <CURRENT-LIABILITIES> 9,414,370 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 112,576 <OTHER-SE> 77,897,068 <TOTAL-LIABILITY-AND-EQUITY> 90,759,874 <SALES> 0 <TOTAL-REVENUES> 97,172,949 <CGS> 82,460,328 <TOTAL-COSTS> 90,701,877 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 7,189,501 <INCOME-TAX> 2,897,000 <INCOME-CONTINUING> 4,292,501 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 4,292,501 <EPS-PRIMARY> .38 <EPS-DILUTED> .38