Stone India is a 7x year old precision engineering company designing, manufacturing various Railway safety products viz. Brake System, Current collection system, Train Lighting system, Pneumatic Suspension System etc. Off late it has set up an Electronic Development Centre and have developed a number of advanced Railway Systems viz. Converters, End of Train Telemeters, Computerised Brake System, Locomotive Fault Diagonistics and Control System etc. It has also developed a green environment friendly toilet system for Railways. As a diversification strategy, Stone has started the following verticals a) Environmental Solution : Bio Toilets, b) Solar Inverters c) Elevators & Escalators and d) Metro Products like Platform Screen Doors, Light weight Pantographs and Third Rail current collection system