1.High power factor>98% 2.Ballast: Electronic 3.Philips cosmo CDM use 4.THD<10% 5.Life span:3 years 90W Energy Saving PHILIPS COSMO use Electronic Ballast1.Several advantages compared to conventional systems, such as:- Energy Saving.Ballast itself is low power consumption; it can save 40% energy and improve 12% luminous efficiency more than electromagnetic ballast. The power-factor of our ...