Hyderabad Industrial Limited is engaged in the production and distribution of Fibre Cement Sheets, Aerocon Panels, AAC Blocks, Material Handling and Processing Plant and Equipment and Thermal Insulation Products (Refractories). Hyderabad Industries Limited is a flagship Company of the C.K.Birla group of Companies, incorporated on 17 June 1946. The Company is located at Hyderabad, Faridabad, Jasidih, Dharuhera, Thimmapur, Vijayawada, Chennai, Thrissur, Wada, Sathariya and Balasore. HIL's product range include Fibre Cement roofing sheets in the name of Charminar, Autoclaved Aerated Concrete Blocks and Panels called Aerocon, Calcium Silicate insulation product called HYSIL, Jointing material for Gaskets and Plant and machinery for these products. The company also provides Aerocool roof blocks for cool indoors to the residential, commercial, and industrial buildings; and flex-O-boards for false ceiling, partitions, paneling, sign boards, return air boxing, air cooling ducts, table tops, and sandwich panels applications, as well as for partition walls, toilets, panel doors, cabinet shelves, and half-height partitions. In addition, the company offers thermal insulation products, such as calcium silicate blocks and pipe-coverings for boilers, blast furnace shafts, annealing furnaces, preheater cyclones, and steam pipelines to the cement, power, petrochemical, and fertilizer plants; and flat products, autoclaved aerated concrete blocks, and material handling and processing plant and equipment. During the year 1984-1985, the company name was changed to Hyderabad Industries Limited with effect from November 11, 1985. During the year 1985-1986, the company started the trial production of Thermal Insulation production (Refractories) at the new plant in Dharuhere (Haryana) and in the same year, the company received the industrial license for manufacturing of Size Reduction and Size Separation Equipment. During the year 1994-1995, the company entered into a technical collaboration agreement with Peiner Hebe-und Transportsysteme, Germany for manufacture of Tower Cranes. During the year 1995-1996, the company further entered into a technical collaboration agreement with Nippon Gasket Company Limited, Japan for manufacture of jointing of international quality to meet OEM requirement. During the year 1996-1997, the company set up a plant at Vijayawada, Andhra Pradesh, for production fibre cement sheet and accessories. During the year 1998-1999, the company commenced commercial production of Fibre Cement Sheet at Vijayawada, Andhra Pradesh. During the year, the company commenced trail production at AAC Blocks Project, Chennai. During the year 2002-2003, the company exported Fibre Cement plant to North America. During the year 2003-2004, the company set up new fibre Cement Sheeting Plant in Eastern Utter Pradesh. During the year, the company introduced the higher duty insulation product, Hysil- 1100 in the market. During the year 2005-2006, the company commenced commercial operation of new fibre cement Sheeting Plant in Eastern Utter Pradesh. During the year 2006-2007, the company acquired 20 acres of land at Balasore in Orissa to set up a sheeting plant with an initial capacity of 125000 tonnes per annum. During the year, the company commenced commercial production of new Fibre Cement Sheet Plant at Sathariya Industrial Development Area, Jaunpur (U.P). During the year 2007-2008, the company set up new fibre Cement Sheeting Plant at Somnathpur Industrial Estate, Orissa with capacity of 125000 MT per annum and also the company further set up new fibre Cement Sheeting Plant at Vijayawada in the existing location capacity of 1250000 MT per annum. In July 2009, the company started commercial production in fiber cement sheeting plant at Balasore, Orissa.