20W energy saving lamp is equivalent to the number of incandescent W
High-quality energy-saving lamps of the material is mainly efficient energy-saving rare earth trichromatic phosphor as raw material,
Poor quality energy-saving lamps are mostly made of ordinary calcium halophosphate powder
Poor quality energy-saving lamps not only short life, and heat, easy to oxidation, the use of a long time to light the light bulb
At present the market sales of energy-saving lamps are part of the inferior products.
20W energy-saving lamps equivalent to 100W incandescent light feeling no 100w incandescent light may be because the white light for the cool
