Onninen is a plumbing and heating, ventilation and air conditioning, industrial, lighting and electrical engineering, telecommunications equipment wholesale company. We supply a wide range of materials, dividing all sales into four customer segments: contractors, industry, infrastructure and retailers. We have been working in the industrial market since 1913. Currently, Onninen operates in the following countries: Finland, Sweden, Norway, Poland and the Baltic States. Onninen OY is part of the K Group.