Hyderabad Industries Limited, originally established in June 1946 as a flagship enterprise of the CK Birla Group, underwent a significant corporate rebranding when it changed its name to HIL Limited, and subsequently transitioned its official corporate name to Birlanu Limited. Operating as a prominent home and building products and services company, Birlanu Limited specializes in manufacturing sustainable construction materials, including fibre cement roofing sheets under the Charminar brand, Aerocon AAC blocks and panels, wall putty, plumbing pipes, and thermal insulation solutions across multiple global manufacturing plants.