gerhard@bertl.biz
ing. gerhard ludwig bertl mob +43 664 3030320 +43 664 3030233 office@bertl.biz hauptstrasse 24, 2201, gerasdorf bei wien austria
mail to: gerhard@bertl.biz phone: +43 664 3030320 phone: +43 664 3030233
arrangements based on:
- output agreement - fix price - time and material - co-ownership