M-light bulb / light bulb

[Multi-filament light bulb] is a bulb have multiple filament connected with two electrical extreme side by side. In the In process of use , the remaining filament will not be affected and continue to turn on when one of them broke. This kind of bulb not only live longer, but is many benefits for us. And the concept can penetrate into the industry of energy-saving lamps and fluorescent tubes.
[Benefit] Have the role of a reminder| More energy-saving| Reduce the number of waste light bulbs| Longer life span.