In the darkmess we use light instruments.That is also regular use in over life.we use many type of the instrument like cfl, bulb( many types ) , fox, tube light, etc.all light equipment on my opinion ujala liquid is better for domesial use because its cost is very low and its light intansity is very good plus power consumsion is too low.in short off less money big proffit/banifit.size is also small to another light equipment.now days its big advencher in electrical world.i suggest purches and give your hand for help to save electrical energy.thanks for see my opinion.if you usefull thus then like and comment on my artical.