Vaisala Oyj stock exchange release 31.10.2007 at 11:15 Vaisala has appointed Lauri Rintanen as Director of Operations, Tapio Engström as Director of Business Development and Helena Marjaranta as Director of Communications. Lauri Rintanen (53) has been appointed as Director, Operations, and member of the Management Group starting 1.11.2007. Lauri Rintanen has a Master of Science in Technology. He has worked e.g. at Nokia in many managerial roles in production, procurement and business development. Mr. Rintanen's most recent role before joining Vaisala is CEO, JOT Automation. (attachment: CV Lauri Rintanen) Tapio Engström (44) has been appointed as Director, Business Development, and member of the Management Group starting 1.11.2007. Tapio Engström has a Master of Science in accounting. Mr. Engström has been working in financial management positions in many companies, including as Vaisala's CFO in 2002-2006. Mr. Engström's most recent role before joining Vaisala is CFO, Aspocomp Oyj. (attachment: CV Tapio Engström) Helena Marjaranta (44) has been appointed as Director, Corporate Communications, and member of the Management Group starting 1.12.2007. Ms. Marjaranta has a Master of Arts in English Philology and she joins Vaisala from Nokia Siemens Networks. Her current role is Head of Communications of the Radio Access Business Unit, and before that she has worked in various communications positions in Nokia Networks and Nokia Corporate Communications (attachment: CV Helena Marjaranta). Helena Marjaranta, Lauri Rintanen and Tapio Engström will report to the Vaisala CEO Kjell Forsén. Further information: Kjell Forsén, CEO, gsm +358 400 757948 Distribution: Nordic Exchange Helsinki Finnish news agency Major media