<TABLE> <S> <C>
<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000
<S> <C> <C> <C> <C> <C>
<PERIOD-TYPE> YEAR<F1> 3-MOS<F1> 6-MOS<F1> 9-MOS<F1> YEAR<F1>
<FISCAL-YEAR-END> DEC-31-1998 DEC-31-1999 DEC-31-1999 DEC-31-1999 DEC-31-1999
<PERIOD-START> JAN-01-1998 JAN-01-1999 JAN-01-1999 JAN-01-1999 JAN-01-1999
<PERIOD-END> DEC-31-1998 MAR-31-1999 JUN-30-1999 SEP-30-1999 DEC-31-1999
<CASH> 12,325 11,793 11,398 11,287 20,303
<SECURITIES> 15,839 15,006 14,209 17,328 186,440
<RECEIVABLES> 16,623 23,099 31,760 38,735 45,336
<ALLOWANCES> (622) (596) (599) (595) (577)
<INVENTORY> 22,351 23,253 24,548 24,799 26,456
<CURRENT-ASSETS> 75,547 81,060 88,877 98,558 284,686
<PP&E> 30,486 31,632 32,056 33,191 35,551
<DEPRECIATION> (14,525) (15,677) (15,607) (16,978) (18,256)
<TOTAL-ASSETS> 103,606 108,270 116,305 127,940 319,061
<CURRENT-LIABILITIES> 13,626 17,005 22,088 23,928 30,718
<BONDS> 0 0 0 0 135,000
0 0 0 0 0
0 0 0 0 0
<COMMON> 27 27 27 28 29
<OTHER-SE> 89,166 90,550 93,452 102,681 151,923
<TOTAL-LIABILITY-AND-EQUITY> 103,606 108,270 116,305 127,940 319,061
<SALES> 130,336 33,933 77,205 130,119 191,575
<TOTAL-REVENUES> 130,336 33,933 77,205 130,119 191,575
<CGS> 92,333 20,257 44,583 74,173 106,208
<TOTAL-COSTS> 92,333 20,257 44,583 74,173 106,208
<OTHER-EXPENSES> 53,173 12,533 26,974 42,498 59,478
<LOSS-PROVISION> 0 0 0 0 0
<INTEREST-EXPENSE> 431 42 97 154 1,416
<INCOME-PRETAX> (14,927) 1,070 5,606 14,477 27,444
<INCOME-TAX> (3,790) 513 2,272 5,588 10,353
<INCOME-CONTINUING> (11,137) 557 3,334 8,889 17,022
<DISCONTINUED> 0 0 0 0 0
<EXTRAORDINARY> 0 0 0 0 0
<CHANGES> 0 0 0 0 0
<NET-INCOME> (11,137) 557 3,334 8,889 17,022
<EPS-BASIC> (0.41) 0.02 0.12 0.33 0.62
<EPS-DILUTED> (0.40) 0.02 0.12 0.31 0.59
<FN>
<F1>RESTATED PER POOLING MERGER OF ADVANCED ENERGY & NOAH HOLDINGS, INC. IN Q2 2000
</FN>
</TABLE>