Dipak Das

Jessop & Co. Ltd. provides design and engineering services. It constructs various infrastructures including industrial buildings, steel bridges, and technological structures. It also manufactures hydro-mechanical equipment, cranes and accessories, railway rolling stocks, construction equipment and mining machinery. The company was founded in 1788 and is headquartered in Kolkata, India.

Ruia Cotex Ltd. manufacturers knitted fabrics. It is engaged in the development, manufacture and processing of cotton and polyester yarn and knitted fabrics in eastern India. The company markets its products to makers of men's and women's apparel, children's wear and sportswear, as well as to household and industrial uniform manufacturers. Ruia Cotex was founded in 1995 and is headquartered in New Delhi, India.

Ruia Group Ltd. imports, supplies, and distributes household textiles, hosiery, and other garments. Its customers include retailers, wholesalers, and healthcare organizations. The Company is headquartered in Manchester, UK

Ruia Group India operates as industrial conglomerates with the interest in infrastructure and engineering, tire and rubber products, and healthcare services. The company is headquartered in Kolkata, India.