Apar Industries supplies Low Sulphur Wax Free Naphthenic Transformer Oil. Apar Industries is an ISO 9001:2008, 14001:2004 and ISO / IEC 17025:2005 NABL certified company. Low Sulphur Wax Free Naphthenic Transformer Oil is available with low viscosity index which ensure excellent cooling characteristics, high solvency and low corrosivity. Low Sulphur Wax Free Naphthenic Transformer Oil is highly refined which ensure excellent non corrosive properties. This optimum refined transformer oils also possess very good electrical and insulating properties, oxidation stability and controlled low or negative gassing tendency.