Kolkata: Himadri Speciality Chemicals Ltd has drawn up a growth roadmap centred on capacity expansion, margin improvement and profit acceleration, as it aims at building the materials backbone for the energy transition economy, a top company official said. The company plans to invest Rs 1,125 crore in lithium iron phosphate (LFP), Rs 248 crore in speciality chemicals, Rs 70 crore in carbon nanotubes and Rs 170 crore in super speciality carbon black, according to its investor presentation for the July-September quarter.