West Bengal Tourism Development Corpn Ltd · South Asian Petrochem Limited · Nicco Parks & Resorts Ltd. · West Bengal State Seed Corpn Ltd · Bengal Nestor's Industries Ltd. · Greater Calcutta Gas Supply Corpn Ltd · Haldia Petrochemicals Ltd · Pcr Chemicals Private Limited · Attivo Economic Zone (Kolkata) Private Limited · West Bengal Green Energy Development Corporation Limited · Sundarban Infrastructure Development Corporation Limited · Bengal Integrated Infrastructure Development Ltd · Kanchan Janga Integrated Infrastructure Development Private Limited · Basumati Corpn. Ltd. · I Win Advisory Services Limited · Bengal Srei Infrastructure Development Limited · West Bengal Industrial Land Holdings Private Limited · The West Bengal Small Industries Development Corpn Limited · West Bengal Industrial Development Corpn Ltd · West Bengal Trade Promotion Organisation · U63040 Wb1974 Ptc029393