Incorporated as Dharuhera Chemicals to manufacture sulphuric acid, Oriental Carbon & Chemicals (OCCL) acquired its present name after the amalgamation of Oriental Carbon with itself in 1984. OCCL acquired the carbon black division as a result of the amalgamation. It has three divisons -- carbon black, insoluble sulphur and chemicals & fertilisers. Carbon black is a vital raw material for the tyre industry, besides being used in paints and rubber products. All the tyre companies in the country buy carbon black from OCCL. The chemicals & fertilisers division manufactures sulphuric acid, oleum single super phosphate (SSP), sodium silico fluoride and stabilised liquid sulphur. Sulphuric acid is captively consumed to manufacture oleums and SSP. Oleum is used in soaps, detergents, insectides, etc. SSP, a phosphatic fertiliser, is also exported to Bangladesh. Insoluble sulphur, produced by the company since 1994, is a vulcanising agent used in the tyre/rubber processing industries. An import-substitute, its quality matches international standards, with technology provided by Sanshin Chemical Industry Co, Japan. In marketing insoluble sulphur, OCCL enjoys the synergy of its major product, carbon black, by way of its long - standing relations with customers in the tyre industry. The Carbon Black Unit and the Insoluble Sulphur Unit have secured the ISO 9002 Certification of Quality during the year 1996. During 1999-2000, as a scheme of arrangement the company will transfer the Carbon Black Unit to a subsidiary company, Messrs Posh Investments Ltd. The company has successfully de-bottlenecked the Insoluble Sulphur Plant and retired all high cost debts subsequent to hiving off the Carbon Black Plant.