Biltech Building Elements Ltd. manufactures and markets Autoclaved Aerated Concrete (AAC) building material under the Biltech ACE brand. Established in 1993, BBEL has more than 20 years of experience and is the largest producer of AAC in India. The company holds over 40% market share and has manufacturing units in Palwal, Haryana, Palghar, Bhigwan Pune in Maharashtra, Surat, Gujarat, Budge-Budge, West Bengal and Bangalore in Karnataka The company plans to set up six additional plants in the next two years.