Minister of natural resources and ecology of Tverskaya region, Sergey Valentinovich Orlov in his letter expressed appreciation for invitation to participate in the Russian Industrial and Environmental Forum «RosPromEco-2014» and exhibition «Resource conservation to sustainable development», he also confirmed participation of the Tverskaya region delegation as well as the exposition in the exhibition with regional ecological projects presentation, in the frames of the «RosPromEco-2014».