Petro Carbon and Chemicals Limited, a part of the ATHA Group and established in 2007, specializes in producing calcined petroleum coke (CPC) from raw petroleum coke (RPC) for the aluminum, steel, and other carbon-based industries. Its production facility in Purba Medinipur, West Bengal, spans approximately 30 acres with an annual production capacity of around 93,744 tons of CPC. The company employs around 74 staff members across production, maintenance, marketing, sales, administration, and corporate services, supplemented by approximately 290 contract workers to support its operations.