Oriental Carbon & Chemicals Limited, incorporated in 1978, belongs to the JP Goenka Group of Companies. We are a globally respected manufacturer of Insoluble Sulphur with more than two-and-a-half decades of experience in manufacturing this product driven by a deep sense of customer service.It has state-of-the-art manufacturing facilities in India at Dharuhera (Haryana) and at Mundra (Gujarat)."Diamond Sulf" the brand under which our Insoluble sulphur is sold is synonymous with quality Insoluble Sulphur which is the undisputed leader in India. Apart from Insoluble Sulphur OCCL also manufactures Sulphuric Acid and Oleums in our chemical complex at Dharuhera.