Zaklady Azotowe is one of the biggest plants in the world specializing in production of nitrogen fertilizers. It is the biggest enterprise in Poland from heavy chemical synthesis. The complex consists of two production lines of granulated fertilizers, where more than a thousand of tonnes of saltpetre and nitro-chalk are produced daily. It is huge and prestigious investment, in which lighting plays significant role. For the toughest chemical conditions Grupa Azoty chose luminaires from Tube LED family and Neptun LED V1, with the number of luminaires counted in hundreds.