Specialty chemicals firm Lanxess Thursday said it is planning to invest up to Rs 1,250 crore in India over the next five years to strengthen businesses for chemical intermediates, high-performance plastics and water treatment products. The company is planning to focus on profitable mid-sized markets including Indian and China and expand integrated value chain, according to Lanxess AG member of the board of management Hubert Fink. "The Indian economy is currently the world's fastest rising major economy, with the chemical industry as one of the fastest growing sectors.