This year, due to the large demand on precision bearing for machine tools, ZWZ's subsidiary No.4 produced 2200 kinds of related bearings, 229% of the amount last year; total output was 1350 thousand sets, 187% of the amount last year; sales was RMB75 million, 182% of the sales last year. Subsidiary No.4 was specialized in cylindrical roller bearing and deep groove bearing. ZWZ has invested a lot on its technical reformation. It also has been regarded as ZWZ's new sources of economic growth in 2005.