Why LED bulb with a watt lamp beads in series, do not have a high-power lamp beads?
The first is caused by the current Light Bulb Fairy Lights design.
Second, before the integrated LED packaging technology is not mature.
Third, the current COB is expensive, the cost is not suitable for ball
Fourth, COB package light efficiency is relatively low
High-power lamp beads LED is a difficult point, the main reason is the issue of fever. And the cost of high-power lamp beads higher.