Mar 25, 2008. /Lesprom.com/. Poyry has acquired the remaining 30% of the shares of ZAO Giprobum-Pöyry (formerly ZAO Giprobum Engineering), based in St. Petersburg, Russia. Poyry is a global consulting and engineering firm focusing on the energy, forest industry and infrastructure and environment sectors. Poyry's net sales in 2007 amounted to about Euro 720 million and it employs 7300 experts.