Ke Rui is the leader of LED in the world at present, especially the high-power LED, which is of course more expensive! Of course, there are many imitation Kerui lamp beads on the market now, and the price is about one-third of the original one. Keep your eyes open when choosing.
Philips itself does not produce light sources. Philips only produces finished lamps, and its LED bulbs are also outsourced.
If it is a small and medium power LED, choose Planck, which has CREE patent authorization.