 
With escalating energy charges and necessities of using electrical lighting during day time as well, one has to think of alternatives to minimise electrical energy consumption. One such alternative is usage of CFL bulbs.One may fine attached file contains too much of technical details and common man can't understand easily. We are living in time where one has to have some basic knowledge in many things to have the best use of modern technology and cost effectiveness.
K.Raman.
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