| | 12 | 6000 4 1 | — | 1997 6 | 1998 ISO9002 | | | | 80 | | | | | | | | 20 | | 60 | 3 | | | 1997 | | 1997 | | | | 20 | | | | 3000 | | | | 1780 | | — | | | | | | |