The opening ceremony of the new workshop on production of polyethylene pipes, used in building gas and water pipelines and irrigation systems was held in "Sasun" Karabakh enterprise Saturday. Initiation of the production process became possible due to the investments made by Iranian businessmen of Armenian origin. The enterprise will produce 250 tons of pipes a year so far. Opening of another two similar workshops is also planned in the future. Nagorno Karabakh Republic President Arkady Ghukasian was present at the ceremony of opening of the new plant.