Yerevan /Mediamax/. Polish engineering and construction firm PBG PBGG.WA announced that it has signed a contract## worth $252 million to rebuild and modernize plant of Armenian chemical firm “Nairit” Plant CJSC.Mediamax report referring Reuters that earlier this year, the Polish company said it was seeking to expand beyond its core business of building gas and oil installations.PBG PBGG.WA announced that the reconstruction and modernization of “Nairit” plant will be concluded in 30 months. Tweet Views 5191